Bishul Akum / Bishul Yisrael Kashrus Policies | Square Cloud

Informational reference only. Double-check original sources for current guidance, and consult your rav or certifying agency. A source review does not confirm live eruv status, minyan schedules or hospitality availability.

Star-K · OU · cRc · OK · Kof-K

Reviewed 2026-09-05

Bishul akum is a rabbinic prohibition on certain foods cooked entirely by a non-Jew, even when ingredients and equipment are kosher. Agencies publicly cite two classic reasons: (1) a safeguard against inadvertently eating non-kosher food, and (2) limiting socialization that could lead toward intermarriage. When a Jew performs an integral part of the cooking (lighting the fire, placing food on the fire, etc.), the food is bishul Yisrael and the prohibition is lifted.

Two classic conditions (both generally required for the prohibition to apply):

1. The food is not eaten raw (eino ne’echal k’mo shehu chai / ne’echal chai).
2. The food is fit for a prestigious / royal table (oleh al shulchan melachim) — in modern agency language, typically a wedding or state/formal banquet standard.

Rema vs Shulchan Aruch (high level, as agencies discuss): Ashkenazim (Rema) generally allow a Jew’s lighting of the fire (aish Yisrael) to create bishul Yisrael; Sephardim (Shulchan Aruch / Beit Yosef) generally require the Jew to place the food onto the fire (or light with the food already on a cold burner). Star-K, OU, cRc, and OK present as primarily Ashkenazic (Rema) in standard certification, with Sephardi / Beit Yosef accommodations varying. Kof-K has not published a general Rema/Mechaber consumer essay in pages reviewed.

Primary consumer / professional hubs

Definition / when cooking triggers bishul akum

Star-K

• Public position: Bishul akum occurs when certain foods of 100% kosher ingredients are cooked by someone not required by the Torah to keep kosher. It applies to conventional heat methods: boiling, broiling, baking, frying, deep frying, roasting. It does not apply to pickling/brining, smoking, or microwaving (per Star-K articles). Classic exemptions: edible raw; form/taste unchanged by cooking (e.g. pasteurized milk); still under ma’achal ben Drusai (~⅓ cooked) threshold; not oleh al shulchan melachim; snack/junk preparations (many poskim); blends whose main component is exempt (e.g. coffee = mostly water).
• Practical guidance: Treat prestigious cooked foods (rice, potatoes, meat, fish, soups, etc.) as needing Jewish participation unless a published exemption applies. Dishes and utensils used with hot bishul akum food need kashering (ask a rav for stoneware/Teflon).
• Sources: Food Fit for a King; A Time and Place….

OU

• Public position: Same two-condition framework. Common foods that must be bishul Yisroel include potatoes, sweet potatoes, squash, pumpkin, eggplant, portobello mushrooms, pasta, rice, eggs, fish, and meat. Ma’achal ben Drusai (~⅓ cooked): food under that threshold is not yet bishul akum; further cooking can still create the problem — ingredient acceptance must verify whether blanched items were already cooked/dealt with. Beans and imitation foods (e.g. seitan) generally not oleh. Foods tasty raw (e.g. corn) or eaten raw with sugar (ginger, cranberries) exempt.
• Practical guidance: When reviewing certified ingredients from other hashgachos, confirm bishul status, not only the symbol.
• Sources: Playing With Fire; Lo Basi Ella L’orer.

cRc

• Public position: The consumer FAQ states that a kosher-certified product is not automatically bishul Yisroel: “Certain foods require bishul Yisroel in order to be kosher, but many do not. Therefore, you should not assume that certified products are necessarily bishul Yisroel.” Consumers may rely on a reputable hashgacha that either has a Jew participate in the cooking or has decided bishul Yisroel is not required. The two-condition rule is stated on the Vegan Restaurant page (Rabbi Dovid Cohen, 2024): “Any food which is not edible raw and is fit to serve to distinguished guests (oleh al shulchan melachim) is only kosher if a Jewish person participated in the cooking.” cRc identifies this as bishul akum and applies it to many vegan-restaurant starches, “such as rice, potatoes, pasta, and quinoa.” Food that is pas (five grains + tzuras hapas + baking) follows pas Yisrael/palter rules instead. In foodservice with a mashgiach temidi, standard practice (Kashrus Daily / restaurant guidance) is Jewish participation for all cooked/baked/fried foods to avoid subtle mistakes. Hot bishul akum contact requires kashering (with noted leniencies for glass/ceramic and libun kal for pans after bishul akum).
• Practical guidance: Home/restaurant: do not assume “ingredients kosher ⇒ dish kosher,” and do not assume a hechsher means bishul Yisroel. Factory vs consumer finishing differs for Sephardim (see §10). A vegan restaurant without meat/fish/cheese is still not kosher if bishul akum (and other issues) are unaddressed.
• Sources: Bishul Yisroel FAQ; Vegan Restaurant; Rice; Sephardim; Kashrus Daily – Bishul Yisroel (states cRc policy; prefer consumer.crckosher.org pages where they overlap).

OK

• Public position: Same two-condition framework (oleh al shulchan melachim + not edible raw). Applies only if a non-Jew cooks entirely alone; Jewish participation permits. Reheating already-cooked food is exempt. Conventional cooking requires a Jew; microwave/induction/sous vide are discussed among contemporary poskim; direct steam does not require bishul Yisrael; indirect steam does; marinating/salting/pickling/sun-drying/cold smoking are not cooking. Methods: place food on existing fire; stir while cooking; turn on fire after food is on; Rema vs Mechaber (Beit Yosef) on lighting vs placing; dehydrated inedible then Jew finishes (e.g. potato flakes) can become BY; ma’achal ben Drusai save-point differs Mechaber (until ⅓) vs Rema (until finished).
• Practical guidance: Treat prestigious cooked foods as needing Jewish participation unless an OK-published exemption applies.
• Sources: Bishul Yisroel Basics.

Kof-K

• Public position: No general public definition / two-condition essay found. FAQ addresses chips only (see §4 / §9).
• Practical guidance: Do not assume a Kof-K symbol means bishul Yisrael unless stated.
• Sources: FAQ (chips Q only).

Foods “eaten raw” exemption (ne’echal chai)

Star-K

• Public position: Foods edible raw are exempt even if they taste better cooked (e.g. baked apples/applesauce). Beets (also used raw in horseradish) exempt. Sushi does not change Star-K’s view that cooked fish still needs bishul Yisrael; cooked sushi rice remains subject to bishul. Corn/string beans/peas/carrots/mushrooms/peppers often treated as edible raw in U.S. canned-vegetable discussions. Country custom matters (e.g. mushrooms may be stricter in Israel).
• Practical guidance: Do not assume sushi-era norms cancel fish bishul requirements for Star-K products.
• Sources: A Time and Place…; Food Fit for a King.

OU

• Public position: Edible-raw foods not prohibited when cooked by a non-Jew. Examples listed: water, oil, butter, jam/jelly, juice, honey, yogurt, canned fruit, flavored drinks, milk, ice cream, banana chips, nuts, cheese, vinegar, ketchup, sauces, applesauce, and many canned vegetables (corn, string beans, peas, carrots, mushrooms, cucumbers, peppers, etc.). Corn need not be bishul Yisroel because raw corn is tasty. Items eaten raw with another food (ginger/cranberries with sugar) also exempt.
• Practical guidance: Still verify that “canned vegetable” is not a prestige item (see asparagus/yams debates).
• Sources: Playing With Fire; Lo Basi Ella L’orer.

cRc

• Public position: Most fruits/vegetables edible raw ⇒ no bishul Yisrael. Meat, poultry, rice, potatoes, pumpkin, eggs need it. Fish still not treated as edible-raw despite sushi popularity (majority custom; fish as one sushi ingredient; non–sushi-grade fish — Kashrus Daily). The Chips article’s second bishul-Yisroel condition is that the food must not be “edible raw.” Corn on the cob is considered edible raw even though most people prefer it cooked, so it does not require bishul Yisroel. Corn chips, however, are commonly made from “field corn”/cow corn, which is not edible until cooked for an extended time — so corn chips do not qualify as edible raw (any permission without bishul Yisroel is instead because they are a snack not served to distinguished guests; see §4). Sweet corn: consumer poll used to support “edible raw” status (Kashrus Daily). If food is first salted/brined until edible, later cooking need not be bishul Yisrael (basis for many hot-smoked salmon leniencies). Multi-ingredient soups judged by majority of ingredients.
• Practical guidance: Do not rely on sushi trends to drop fish/rice bishul care. Do not treat corn chips as “edible raw” the way sweet corn on the cob is treated.
• Sources: Chips; Rice; Vegan Restaurant; Kashrus Daily – Bishul Yisroel.

OK

• Public position: Products eaten raw are not subject to bishul Yisrael (examples: apples, carrots, celery, peppers, nuts). Housekeeper article repeats edible-raw exemption (e.g. carrots).
• Practical guidance: Raw-edible produce remains exempt when cooked by a non-Jew under this rule.
• Sources: Bishul Yisroel Basics; Housekeeper.

Kof-K

• Public position: No public edible-raw policy page found.
• Sources: Gap.

“Not fit for a king’s table” / unimportant foods (eino oleh al shulchan melachim)

Star-K

• Public position: Non-prestigious foods (baked beans, corn flakes, doughnuts) exempt. Many poskim also exempt snack/junk preparations (candy, potato chips) even when the base food could be oleh. Oleh standard = modern elegant meal / wedding; White House chef consulted: no potato chips, no canned goods at state dinners (fresh only)—used as a practical benchmark, with a note that pre-canning cooking can still create bishul akum. Country-dependent: potato chips prestigious in some places ⇒ would require bishul there.
• Practical guidance: Judge the prepared form, not only the raw commodity (rice bread vs rice; chips vs mashed potatoes).
• Sources: Food Fit for a King; Do Potato Chips Require Bishul Yisroel?; A Time and Place….

OU

• Public position: Not fit for royal dinner ⇒ permitted. Examples: cereal, potato chips, corn chips, donuts, canned beans, popcorn, candy. Potatoes today generally are oleh (contra older Aruch HaShulchan “poor man’s food”). Rav Belsky: beans/peas still not fancy; imitation foods not chashuv; chickpeas not oleh in America but hummus/chickpeas should be bishul Yisroel in Middle Eastern countries; chestnuts should be bishul Yisroel. Potato chips and (per Halacha Yomis) French fries not oleh in current form; canned tuna argued not suitable for aristocracy in canned form (coupled with factory/steam sevaros).
• Practical guidance: Form matters — chips ≠ mashed potatoes; canned fish ≠ plated fish.
• Sources: Playing With Fire; Playing with Fire – Part III; Halacha Yomis – Potato Chips; French Fries; Beans & Peas; Lo Basi….

cRc

• Public position: Oleh ≈ food served to a president/king at a state dinner or at a wedding/formal banquet (not private breakfast) (Kashrus Daily). Pancakes/waffles at informal brunch not oleh. Method of preparation controls.
  • Potato chips (Chips article, Rabbi Dovid Cohen, 2024): Most certifying agencies rule bishul Yisroel is not required because bishul applies only when the food is fit to serve distinguished guests; potato chips are clearly not normally served that way. A stricter minority holds that if a food can be prepared in any way for distinguished guests, bishul Yisroel is required regardless of how it is cooked — and since baked potatoes are oleh al shulchan melachim, that view would require bishul Yisroel even for potato chips. cRc reports that most agencies disagree with that minority.
  • Corn chips: Not exempt as edible-raw (see §3); they may be permitted without bishul Yisroel because they are a snack item not served to distinguished guests.
  • Canned tuna not oleh in canned form (Kashrus Daily). Blintzes treated as oleh for cRc certification despite some caterer reports that they would not be served at a wedding or fine dinner (rather fancy breakfast/casual brunch).
• Practical guidance: Snack vs banquet form is decisive for many industrial products; do not assume the minority “any potato form” view is cRc/majority-agency practice.
• Sources: Chips; Bishul Yisroel for Blintzes; Kashrus Daily – Bishul Yisroel.

OK

• Public position: Oleh = formal meal / wedding / state dinner; applies to the whole food, not a minor coating (eggs need BY, egg wash on bread does not). Potato chips vs roasted/mashed potatoes: form question raised in Basics. Chanukah Q&A: OK requires bishul Yisrael for French fries; accepts non-BY potato chips in restaurants; when OK certifies potato chip production, OK does require bishul Yisrael. Plain beans cited as not royal-table (housekeeper article).
• Practical guidance: Notable difference: OK restaurant acceptance of non-BY chips vs requiring BY when OK certifies chip plants; fries require BY (stricter than OU Rav Belsky fries heter as published).
• Sources: Bishul Yisroel Basics; Consumer Questions – Chanukah 5776; Housekeeper.

Kof-K

• Public position: Terra Chips FAQ: “According to the opinion of most Poskim, chips do not require Bishul Yisroel.” Kof-K formerly implemented a BY system at Terra to accommodate machmirim; no longer practical; continues to certify Terra Chips kosher without that stringency.
• Practical guidance: Kof-K symbol on Terra Chips ≠ bishul Yisrael.
• Sources: KOF-K FAQ; contemporaneous statement mirrored at DOJLife (secondary reprint of Kof-K letter).

Steam / microwave / smoking / frying / baking / roasting nuances

Star-K

• Public position: Conventional cooking/frying/roasting/baking trigger bishul. Microwave: bishul akum does not apply. Smoking/brining: not bishul akum. Hot steam on tuna is debated (eshun); Star-K still treats canned tuna as a bishul concern and requires mashgiach temidi / Jewish steam start for kosher runs. Timers / remote grama lighting generally do not qualify; direct boiler switch/button by a Jew in hotels/hospitals/factories does. Continuous pilot heating the cavity can remain indefinitely; indirect pilot may need rav guidance. Light bulb / glow bar contributing heat (hashlachas kisem) discussed as valid for Star-K Ashkenazi bishul Yisrael. Oven that stayed warm after Jew’s fire, then relit by non-Jew, retains status.
• Practical guidance: Do not use microwave exemption to skip bishul on conventionally cooked factory foods. For institutional boilers, Jew must directly ignite.
• Sources: Food Fit for a King; The Tell Tail Sign.

OU

• Public position: Cold smoke (lox) — no heat ⇒ no bishul akum. Hot smoke (sable, whitefish, some tuna) — serious concern; solutions include mashgiach lighting, pilot, cold-smoke-first, phone remote ignition (Shain-type), etc. OU does not subscribe to the light-bulb heter (some other agencies do). Steam: disputed; for factory steamed tuna, OU combines steam uncertainty with Maharit Tzalon / Rav Moshe factory sevaros. Instant potatoes often steam-processed — OU does not require bishul Yisroel for them on that basis (Minchas Yitzchak). Pilot / aish m’aish used in factories with mashgiach relighting on visits; restaurants do not rely on aish m’aish — mashgiach lights fires. Chocolate: OU combines multiple heteirim (factory + minor role, etc.) rather than relying on any alone.
• Practical guidance: Factory vs restaurant standards differ sharply on pilots. Prefer MTBY-coded tuna when seeking clear bishul Yisrael canned tuna.
• Sources: Playing With Fire; Aish M’aish; Halacha Yomis – Instant Potatoes; Chocolate Production.

cRc

• Public position (stated cRc policy): Direct steam (e.g. potato dices) — no bishul Yisrael required (treated like smoking) (Kashrus Daily). Electric coil / microwave — potentially require bishul Yisrael. Smoking/pickling/salting/fermenting without heat — no. Microwave hard to “leave on” all day; common restaurant fix: mashgiach par-bakes potatoes in oven (bishul Yisrael), then anyone can microwave to finish. Blintz electric wheel: Shain remote-on machine or permanent Jew-lit heating rods as kisem. Live steam for crisped rice: Rav Schwartz ruled no bishul akum concern (water cooking differs). The Grains consumer page adds that hashgacha on factory-cooked grains (bulgur, instant rice, etc.) must consider whether the factory cooks with live steam and whether that matters for bishul akum, as well as whether the consumer will cook further or merely warm/hydrate, and whether the food is significant enough to require bishul Yisroel.
• Practical guidance: Do not assume Star-K’s “microwave never bishul akum” equals cRc foodservice practice — cRc treats microwave cooking as potentially requiring Jewish participation. Apparently raw grains may still have a factory-steam / factory-cook bishul issue.
• Sources: Grains; Crisped Rice; Bishul Yisroel for Blintzes; Kashrus Daily – Bishul Yisroel. Search snippets from Restaurant Mashgiach still thinner than other consumer pages: rice cooker / convection / microwave need repeated Jewish restarts.

OK

• Public position: Steam: OK does not require steam cooking to be bishul Yisrael (Chanukah Q&A). Basics: direct steam — no BY; indirect steam — yes. Microwave: housekeeper article — cooking in a microwave may be subject to bishul akum per some opinions ⇒ treat like stove/oven. Pilots: with mashgiach temidi, OK allows pilot lights l’chatchila only in the fire or very close proximity; mashgiach checks pilots every morning.
• Practical guidance: Do not equate OK steam exemption with Star-K’s tuna steam solutions; for microwaves OK is more cautious than Star-K’s “never bishul akum” line.
• Sources: Chanukah 5776 Q&A; Bishul Yisroel Basics; Housekeeper.

Kof-K

• Public position: No public steam/microwave/smoking bishul policy found.
• Sources: Gap.

Jewish participation (lighting flame, stirring, placing on fire) — what each agency requires

Star-K

• Public position (Ashkenazi / Rema): Optimal — place food on cold apparatus, then Jew lights. Also accepted — Jew lights fire/pilot first; thereafter anyone may place food. Hashlachas kisem / added heat qualifies. Sephardi / Beit Yosef: lighting boiler alone ineffective; Jew must place raw oleh food onto the fire (or light with food already on cold burner). STAR-S division certifies Beit Yosef / Sephardi standards (Rav Emanuel Goldfeiz).
• Practical guidance: Standard STAR-K restaurant/factory lighting satisfies Ashkenazim; Sephardim should seek STAR-S / Beit Yosef bishul.
• Sources: Food Fit for a King; Bishul Yisroel Sephardi….

OU

• Public position: Follows Rema for standard OU: Jew lights fire; non-Jew may then place food. Sephardim need Jew to place pot on burning fire (or Jew lights after non-Jew placed pot on cold stove). Raising temperature qualifies only if it immediately turns on / increases the flame (Rav Belsky). Factories: mashgiach lights boiler pilot; should relight on every visit. Restaurants: mashgiach lights; do not rely on aish m’aish. Electronic ignition (no standing pilot) increases home-help risk.
• Practical guidance: Home with non-Jewish help — Jew must manage ignition; utensils may need kashering if bishul akum occurred. Table-side sterno also needs mashgiach lighting.
• Sources: Playing With Fire; Aish M’aish; Lo Basi….

cRc

• Public position: As Ashkenazi hechsher: lighting fire, placing food on fire, or stoking coals all create bishul Yisrael. For Sephardi request: mashgiach should put food onto the already-lit fire. Adjusting an already-burning oven from 200→300° without the flame going from off→on does not count. Stovetop knob-up that enlarges flame does. Pilots lit by mashgiach (aish m’aish); extinguish/relight periodically. Convection ovens: door-open kills flame — Jew must close door or ensure residual warmth. Preferred: mashgiach turns on all fires; non-Jews must not.
• Practical guidance: Ask for “bishul Yisrael for Sephardim” when needed; do not assume lighting-only restaurants satisfy Beit Yosef.
• Sources: Sephardim; Kashrus Daily – Bishul Yisroel.

OK

• Public position: Rema (light fire) vs Mechaber/Beit Yosef (place food). Foodservice: mashgiach ignites all cooking equipment daily and monitors; for Sephardi / Beit Yosef requests, mashgiach personally places food (e.g. burger) on the fire. Most agencies follow Rema while offering Beit Yosef on request (OK foodservice article).
• Practical guidance: Standard OK restaurant lighting ≈ Ashkenazi; ask for Beit Yosef placement when needed.
• Sources: Bishul Yisroel Basics; Foodservice Mashgiach; Chanukah Q&A.

Kof-K

• Public position: No public Rema/Beit Yosef participation essay found.
• Sources: Gap.

Factory / industrial vs home / restaurant

Star-K

• Public position: Does not rely on the commercial-factory heter (Rav Moshe / Maharit Tzalon) as a standalone policy (“STAR-K policy is not to rely on this heter at all” — potato-chip article). Potato chips permitted because they are not oleh in chip form, not because of factory anonymity. Industrial continuous cookers / retorts: mashgiach lighting boiler = Ashkenazi OK, Sephardi insufficient. Instant rice/couscous: mashgiach turns on boilers.
• Practical guidance: Expect process-based bishul solutions, not “it’s a factory so OK.”
• Sources: Potato chips article; Bishul Yisroel Sephardi….

OU

• Public position: Rav Moshe: specialized factory equipment unlike home cooking can remove bishul akum; OU generally does not rely on this alone — combines with other sevaros (steam, not oleh in that form, Maharit Tzalon commercial cooking, etc.). Restaurants with mashgiach temidi effect true bishul Yisrael by lighting. Home help / electronic ignition highlighted as a consumer risk area.
• Practical guidance: Certified factory product may use combined leniencies; restaurant food should have fires lit by mashgiach.
• Sources: Playing With Fire; Aish M’aish; Chocolate Production.

cRc

• Public position: Industrial decisions turn on edible-raw / oleh / steam nuances. The Grains page notes that some apparently raw grains (including bulgur and instant rice) were actually cooked at the factory — in many cases fully cooked — so hashgacha must handle bishul akum; certification on the grain is the consumer’s guarantee. Instant rice that is already fully cooked in the factory (even if it looks raw and only needs about five minutes in hot water) requires bishul Yisroel and certification; the home step merely warms/rehydrates it. If a non-Jew cooks food until about halfway cooked (ma’achal ben Drusai), it becomes forbidden as bishul akum; whether parboiled supermarket rice can be “saved” by a Jew finishing the cooking is Ashkenazi (Rema) vs Sephardi (see §10). Foodservice: mashgiach participates in essentially all cooking. Nursing-home / cholim may use lower bishul standards in limited cases (others should not eat that food; dishes need not be kashered solely for that). Blintzes: factory must create bishul Yisrael (cannot rely on consumer frying).
• Practical guidance: Consumer “finish cooking” heter is Rema/Ashkenazi and product-specific — not for fully edible microwavable / already-cooked items. Do not assume “looks raw” grains or rice are uncooked.
• Sources: Rice; Grains; Blintzes; Sephardim; Kashrus Daily.

OK

• Public position: Chanukah Q&A implies factory chip certification includes BY when OK certifies the plant (even though restaurants may accept non-BY chips). Canned product edible straight from can ⇒ OK requires BY. Foodservice mashgiach model is Rema lighting with optional Beit Yosef.
• Practical guidance: OK factory BY expectations can be stricter than restaurant acceptance for the same snack form (chips).
• Sources: Chanukah 5776 Q&A; Foodservice Mashgiach.

Kof-K

• Public position: Terra Chips: factory BY system discontinued; certified without that stringency (most poskim: chips don’t need BY).
• Sources: FAQ.

Canned / processed / restaurant / catered foods

Star-K

• Public position: Canned soups and canned pasta need supervision for bishul. Canned fruit OK (eaten raw) if equipment/ingredients kosher. Many canned vegetables OK if edible raw or not elegant; canned whole asparagus needs reliable hechsher addressing bishul. IQF fully cooked pasta/rice/meat — bishul applies. Blanched IQF squash under ben Drusai — not yet. Restaurant/catering: fires lit before cooking (Ashkenazi); Sephardi need placement.
• Practical guidance: Prefer hechsher on canned prestige items; don’t assume “canned = not oleh.”
• Sources: A Time and Place…; Food Fit for a King.

OU

• Public position: Further-processing category (Ashkenazi): parboiled rice, water chestnuts, canned potatoes, frozen fries/latkes/tater tots (if not fully cooked), instant potatoes, pasta — often certified expecting Jew to finish cooking. Canned fish: generally not forbidden as bishul akum (not suitable for state dinner in canned form + factory sevaros); special MTBY (mashgiach temidi + bishul Yisrael) productions exist. Restaurant: continuous fire oversight.
• Practical guidance: Check brand cook-state for fries/latkes; MTBY if you want clear tuna bishul Yisrael.
• Sources: Playing With Fire; Playing with Fire – Part III.

cRc

• Public position: Fully cooked shelf-stable rice without hechsher — do not use (processing = bishul). Instant rice needs certification. Cooked, smoked, or otherwise processed fish requires proper kosher certification (raw fish with only salt and pepper may be purchased without concern; unidentified seasoning blends need hashgacha). The Fish page does not give a separate fish-specific bishul-Yisroel exemption. Restaurant mashgiach roles include ingredients, bishul Yisrael, and vegetable checking; cannot only light once in the morning — fires blow out; rice cookers/convection/microwaves need repeated attention (per public article title/snippets; Restaurant Mashgiach still thinner than other consumer pages).
• Practical guidance: Travel rice packs and similar need hechsher even if ingredients are only rice+salt. Do not buy cooked/smoked/processed fish without certification just because the species is kosher.
• Sources: Rice; Fish; Vegan Restaurant; Restaurant Mashgiach (still relatively thin vs other primary pages).

OK

• Public position: If product is edible straight from the can, OK requires bishul Yisrael (Chanukah Q&A, e.g. canned yams discussion). Restaurant mashgiach oversees BY for cooked foods fit for a king’s table.
• Practical guidance: Do not assume canned prestige vegetables are exempt under OK.
• Sources: Chanukah 5776 Q&A.

Kof-K

• Public position: No public canned-food bishul policy found.
• Sources: Gap.

Specific foods agencies single out (rice, potatoes, pasta, eggs, meat, fish, tuna, etc.)

Star-K

• Rice: Conventional cooked rice — subject. Parboiled (hull-on steam, then milled raw) — not subject at manufacture (needs full home cooking). Instant/minute rice — subject (fully cooked; cold-water edible). Popped rice / Rice Krispies — steamed under ben Drusai / not oleh after pop — not subject. Pasta rice / dried pasta — typically under ben Drusai then dried; Tunisian couscous steamed fully edible — like instant rice, oleh, needs care. IQF cooked rice/pasta — subject.
• Potatoes / yams: Mashed, flaked, fried, canned cooked beyond ben Drusai — subject. Potato chips — not required bishul Yisrael (STAR-K + other nationals). Eggplant: baba ghanoush grilled not oleh; fried eggplant Parmesan is.
• Fish / canned tuna: Oleh; steam debate; Star-K requires mashgiach temidi, factory kosherization from prior bishul akum, mashgiach starts steam on cold oven, kosher can codes. Does not accept sushi as making fish “edible raw.”
• Meat/chicken IQF: Need reliable hashgacha including bishul.
• Sources: A Time and Place…; Potato chips; Tell Tail Sign.

OU

• Must be bishul Yisroel examples: Potatoes, sweet potatoes, squash, pumpkin, eggplant, portobellos, pasta, rice, eggs, fish, meat.
• Potato chips / French fries: Not oleh in those forms (Rav Belsky) — chips and fries not required bishul Yisrael.
• Instant potatoes: Fully cooked flakes rehydratable even cold ⇒ Jew’s hot water isn’t “finishing cooking”; OU permits without bishul Yisrael via factory steam heter (Minchas Yitzchak). (Older Playing With Fire also cites Avkas Rochel dehydration heter if not cold-water edible — Halacha Yomis notes cold-water issue.)
• Beans/peas: Not oleh (Rav Belsky). Chickpeas: U.S. not; Middle East yes. Chestnuts: yes. Seitan/imitations: no.
• Fish: Cold smoke OK; hot smoke needs solution; canned fish generally OK without full bishul Yisrael (form + factory + steam tziruf); MTBY special runs.
• Chocolate: Combined heteirim; not alone relying on factory.
• Sources: Lo Basi…; Halacha Yomis chips fries instant potatoes beans; Playing With Fire.

cRc

• Rice (Rice page, Rabbi Dovid Cohen, 2023): Cooked rice meets both bishul criteria and needs bishul Yisrael; a hashgacha should ensure it. “Instant” rice already fully cooked in the factory (even if it looks raw and only needs about five minutes in hot water) requires bishul Yisroel and certification — the five minutes at home merely warms/rehydrates it and does not make it newly edible. Much supermarket “raw” rice is actually parboiled/partially cooked; if a non-Jew cooks it until about halfway cooked (ma’achal ben Drusai / מאכל בן דרוסאי), it becomes forbidden as bishul akum. Ashkenazim (Rema): if it still needs more cooking and a Jew does the final cooking, it changes from bishul akum to bishul Yisroel and is permitted — rice may leave the factory as bishul akum but become kosher/bishul Yisroel when a Jew cooks it at home. Sephardim: once it is bishul akum and the cooking is complete, it is too late to save it by a Jew finishing; they should buy rice that is truly raw (or at least not halfway cooked) or certified bishul Yisrael. Even a hechsher following Ashkenazi rulings may not ensure bishul Yisrael, so that rice may not suit Sephardim.
• Grains (Grains page, 2024): Wheat, rice, buckwheat, quinoa, and barley are generally assumed kosher without formal certification (subject to yoshon/chametz and insect checking), but some apparently raw grains were actually cooked at the factory, including bulgur and instant rice (often fully cooked). Hashgacha must consider (a) further cook vs merely warm/hydrate, (b) factory live steam and whether that matters for bishul akum, and (c) whether the food is significant enough to require bishul Yisroel. Certification on the grain is the consumer’s guarantee.
• Vegan restaurant starches: Rice, potatoes, pasta, and quinoa are named as bishul akum concerns when cooked without Jewish participation.
• Potato chips / corn chips: Majority of agencies: potato chips not oleh in chip form ⇒ no bishul Yisroel. Stricter minority: all cooked potato forms (including chips) need bishul Yisroel because baked potatoes are oleh — cRc says most agencies disagree. Corn chips: not edible-raw (field/cow corn); snack/eino oleh is the remaining heter.
• Blintzes: Thin flour/water wrap is tavshil, not pas paltar. Conclusion quote: “In conclusion, blintzes require bishul Yisroel in the factory because (a) they are not subject to the leniency of pas paltar, (b) we consider them to be oleh al shulchan melachim and (c) we cannot count on the consumer finishing off the cooking at home.” Consumer frying rejected: they leave the factory fully edible and package directions allowed microwave warming; frying an already fully cooked item may only improve taste and may be too late. Implementation: Jewish-lit Shain machine or one of the wheel’s heating rods kept on continuously after being lit by a Jew (kisem). Footnote on general cRc pas paltar policy: “The general policy of the cRc is not to certify pas paltar,” with an exception for dairy/non-chalav Yisrael items on the assumption that people particular about pas Yisrael will not consume chalav stam.
• Fish: “The above only applies to raw fish; fish which is cooked, smoked or otherwise processed requires proper kosher certification.” No separate fish-specific bishul-Yisroel exemption on that page.
• Crisped rice: Interim cook may hit ben Drusai; live steam ⇒ Rav Schwartz no concern; water cook debated; article leaves final determination open for further research.
• Canned tuna: Not oleh in canned method ⇒ no bishul Yisrael required (Kashrus Daily).
• Eggs/meat/poultry/potatoes/pumpkin: Listed as needing bishul potential.
• Sources: Rice; Grains; Chips; Blintzes; Fish; Vegan Restaurant; Crisped Rice; Sephardim; Kashrus Daily.

OK

• French fries: Require bishul Yisrael (Chanukah Q&A).
• Potato chips: Non-BY acceptable in OK restaurants; OK-certified chip plants do require BY.
• Eggs / omelets: Housekeeper example — omelet meets both bishul criteria; utensils may need kashering.
• Canned edible products: Require BY if edible from can.
• Steam-cooked foods: Steam cooking not required to be BY (general steam Q&A).
• Sources: Chanukah 5776 Q&A; Housekeeper; Bishul Yisroel Basics.

Kof-K

• Chips (Terra): Most poskim — chips do not require BY; Kof-K certifies without BY stringency after discontinuing prior accommodation.
• Other foods: No public rice/potato/fish/tuna bishul essays found.
• Sources: FAQ.

Sephardi vs Ashkenazi stringencies (as agencies note)

Star-K

• Public position: Rema: lighting fire suffices. Beit Yosef: Jew must place food on fire / light with food on cold burner. Lighting continuous cookers’ boilers helps Ashkenazim only. STAR-S founded for Beit Yosef bishul, chalak, yoshon, pas Yisrael, kitniyot l’Pesach, Sephardi hamotzi bread, etc.
• Practical guidance: Standard STAR-K ≠ STAR-S for Sephardi bishul.
• Sources: Bishul Yisroel Sephardi….

OU

• Public position: Documents Caro vs Rema dispute clearly; OU practice follows Rema for standard certification; Sephardic custom needs placement. Notes non-universal acceptance of wood-chip / pilot extensions.
• Practical guidance: Sephardim should not assume OU factory pilot lighting equals Beit Yosef.
• Sources: Playing With Fire.

cRc

• Public position: Two Sephardi bishul gaps vs Ashkenazi certification: (1) no “Jew finishes cooking upgrades factory bishul akum” (critical for parboiled rice); (2) Jew must place food on fire, not only light it. cRc can accommodate Sephardi restaurant requests by having mashgiach place food on fire.
• Practical guidance: Sephardim should verify rice and restaurant procedures, not only the cRc logo.
• Sources: Sephardim; Rice.

OK

• Public position: Documents Mechaber vs Rema; Sephardi restaurants/caterers: Beit Yosef — mashgiach puts food on the fire. Foodservice article: most agencies follow Rema, offer Beit Yosef on request.
• Practical guidance: Request Beit Yosef explicitly at OK foodservice when needed.
• Sources: Chanukah Q&A; Foodservice Mashgiach; Basics.

Kof-K

• Public position: No public Sephardi bishul policy found.
• Sources: Gap.

Hotel / airline / hospital / institutional settings

Star-K

• Public position: In hotels, hospitals, or factories, Jew flipping a switch/pressing a button that directly ignites a boiler fulfills bishul Yisrael. Indirect grama (phone dial that trips a switch that lights — as distinct from approved direct systems) may not qualify; rabbinic guidance recommended. (OU separately describes approved touch-tone remote oven systems.)
• Practical guidance: Confirm the institutional ignition chain is direct.
• Sources: Food Fit for a King.

OU

• Public position: Consumer summer Q&A addresses hotel microwave/oven use via double-wrapping (kashrus of keilim/absorption), not a dedicated bishul akum hotel policy page in this research pass. Cruise: certified double-wrapped meals heated sealed. Factory remote phone ignition discussed as a bishul solution for smokehouses.
• Practical guidance: Double-wrap for non-kosher hotel microwaves; bishul still depends on whether the food was already bishul Yisrael when cooked.
• Sources: OU Summer Kashrut Q&A; Playing With Fire.

cRc

• Public position: Nursing homes / cholim may allow certified food below normal bishul Yisrael standards in some cases (Rabbi Eisenbach / Rabbi Katz); healthy people should not eat that food; dishes need not be kashered solely therefor. Hotel microwave rice question redirects to bishul of the product itself.
• Practical guidance: Institutional choleh leniencies are not general consumer heteirim.
• Sources: Kashrus Daily; Rice.

OK

• Public position: No dedicated public hotel/airline/hospital bishul akum essay located in this pass (foodservice mashgiach article is restaurant/commissary-focused).
• Practical guidance: No public institutional bishul policy found beyond restaurant model.
• Sources: Gap / Foodservice Mashgiach.

Kof-K

• Public position: No public policy found.
• Sources: Gap.

Other bishul-related policies found

Coffee / tea / beer / water-majority beverages

• Star-K & OU: Brewed coffee generally OK — water is primary component (prestigious beverage but exempt blend). OU cites Tosafot/Pri Chadash for beer/coffee/tea/cocoa; notes dissenters.
• cRc: No dedicated public coffee-bishul page located in this pass beyond general rules.
• Sources: Star-K Food Fit for a King; OU Playing With Fire / Part III.

Bread / pas vs tavshil

• All three: Commercial bread follows pas palter / pas Yisrael, not bishul akum. cRc blintz wraps ruled tavshil (paper-thin, no toar lechem) ⇒ bishul applies. Explicit conclusion: they require factory bishul Yisroel because they are not subject to pas paltar, they are treated as oleh al shulchan melachim, and cRc cannot count on the consumer finishing cooking at home. Footnote: “The general policy of the cRc is not to certify pas paltar,” with an exception for dairy/non-chalav Yisrael items (people particular about pas Yisrael will not consume chalav stam).
• Sources: OU Playing With Fire Part III; cRc Blintzes.

Utensils after bishul akum

• Star-K / OU / cRc: Hot bishul akum food treifs utensils; kasher. cRc notes glass/ceramic three hagalot leniency and libun kal for pans after bishul akum.
• Sources: Star-K Food Fit / A Time and Place; OU Playing With Fire; Kashrus Daily.

Home non-Jewish help

• OU: Emphasizes modern working-couple risk; electronic ignition removes old pilot heter; food and pots may be non-kosher.
• Star-K / cRc: Same Rema framework; less dedicated consumer “maid” essay found in this pass than OU.
• OK: Dedicated housekeeper article — non-Jew cooking for herself (e.g. omelet) can treif utensils (bishul akum); prevailing view requires kashering; exceptions if Jew lit pilot/stove; reheating OK; edible-raw / not-oleh exempt; microwave may be subject to bishul akum — treat like stove; best practice: limit housekeeper to prep under supervision.
• Kof-K: No public housekeeper / home-help bishul page found.
• Sources: OU Playing With Fire; OK Housekeeper.

Cross-agency comparison (sourced differences only)

Research gaps / hard-to-fetch notes

• cRc consumer.crckosher.org (2026-09-04): Browser verification confirmed these primary consumer pages loaded (after earlier Cloudflare “One moment, please…” on the hub / some first attempts): Bishul Yisroel FAQ, Vegan Restaurant, Rice, Grains, Chips, Bishul Yisroel for Blintzes, Fish, plus previously used Sephardim / Crisped Rice. Prefer these over Kashrus Daily where they overlap. Restaurant Mashgiach remains thinner (Cloudflare on some automated fetches; content still largely from search-index snippets + Kashrus Daily “cRc’s policy” language) — may still need a live re-read.
• Kashrus Daily Google Site: Not on crcweb.org domain; written in cRc mashgiach voice (Eisenbach/Katz). Used where it states cRc policy; cross-check preferred against live cRc consumer pages / Sappirim / Rabbi Dovid Cohen’s Pas Yisroel and Bishul Yisroel volume.
• OU Halacha Yomis “Instant Potatoes (Continued)”: Linked from series; full steam-rationale page not successfully fetched (timeout). Instant-potatoes steam conclusion is on p/136117.
• Airline meals: No dedicated Star-K/OU/cRc bishul akum airline essay found in this pass (OU cruise note is closest).
• Eggs, pasta detail: OU lists them as requiring BY; deep egg-specific public essays thin for all three.
• Induction cooktops: Mentioned in third-party summaries re Rav Heinemann; not confirmed as a standalone public Star-K policy page in fetches this pass — omit as agency policy until sourced.
• OK: Strong public bishul set (Basics, foodservice mashgiach, housekeeper, Chanukah Q&A). Thin on: canned tuna specifically, rice/parboil Sephardi warnings, airline/hotel, induction detail, chocolate (separate “Does Chocolate Require Bishul Yisroel?” exists but not fully mapped in this pass).
• Kof-K: Very thin — essentially the Terra Chips FAQ psak only; no general bishul Yisrael handbook, steam/microwave, or Sephardi pages located on kof-k.org.