Orthodox Jewish Diet Restrictions: The Complete List

People search for "Orthodox Jewish diet restrictions" because they want a clear, complete list. So let me give you one — no philosophy, no history lessons, just the rules. I will explain the reasoning briefly where it helps, but this article is the reference guide. If you want the deeper story behind kosher, read my kosher">complete guide to kosher.

Animals: What Is and Is Not Permitted

Land Animals

Must have BOTH split hooves AND chew their cud.

Permitted: Cow, sheep, goat, deer, bison, elk Not permitted: Pig (split hooves but does not chew cud), rabbit (chews cud but no split hooves), horse, camel, dog, cat

Fish

Must have BOTH fins AND scales.

Permitted: Salmon, tuna, cod, halibut, herring, sardines, tilapia, trout, carp, bass, flounder, sole, whitefish, pike, perch, snapper Not permitted: Shrimp, lobster, crab, clam, oyster, mussel, scallop, octopus, squid, catfish, shark, swordfish, eel, monkfish

Birds

The Torah lists specific forbidden birds (mostly predators and scavengers). Permitted birds are identified by tradition.

Permitted: Chicken, turkey, duck, goose, Cornish hen, quail (by some traditions) Not permitted: Eagle, hawk, vulture, owl, ostrich (by most traditions)

Insects

Not permitted, with limited exceptions for certain locusts (primarily in Yemenite tradition). This is why Orthodox Jews carefully check leafy greens, berries, and broccoli for insect infestation.

Eggs

Permitted only from kosher birds. Must be checked for blood spots — if a blood spot is found, the egg is discarded.

Meat and Dairy Separation

This is the rule that affects daily life most:

• Meat and dairy cannot be eaten together — not in the same dish, not in the same meal, not even on the same plate
• Wait time after meat before eating dairy: 6 hours (most communities), 3 hours (some Dutch/German traditions), 1 hour (some traditions)
• Wait time after dairy before eating meat: 30 minutes to 1 hour (after hard cheese, 6 hours)
• Separate dishes, pots, utensils, and sinks for meat and dairy — a kosher kitchen has two of almost everything
• Pareve foods (neither meat nor dairy) — fish, eggs, fruits, vegetables, grains — can be eaten with either

Shechita: How Meat Must Be Prepared

For meat to be kosher:

1. The animal must be slaughtered by a trained shochet using a perfectly sharp knife in a single swift cut
2. The animal is inspected for disease or defects (bedikah)
3. Certain fats (chelev) and the sciatic nerve (gid hanasheh) are removed
4. The meat is soaked and salted to remove all blood
5. For the highest standard (glatt kosher), the lungs must be smooth and free of adhesions

Kosher Certification

All processed, packaged, and prepared foods require a kosher certification symbol (hechsher):

• OU (Orthodox Union) — most widely recognized
• OK, Star-K, Kof-K, CRC — other major agencies
• D = dairy, M or Glatt = meat, P = Passover, Pareve = neither

Without a recognized hechsher, an Orthodox Jew will not eat a packaged product.

Wine and Grape Products

Kosher wine has special rules: it must be produced, handled, and opened by Sabbath-observing Jews. Mevushal (flash-pasteurized) wine can be handled by anyone. Grape juice, grape-flavored items, and wine vinegar also require kosher supervision.

Passover Restrictions (Additional)

During the 8 days of Passover:

• No chametz — no bread, pasta, cereal, beer, whiskey, or any product containing wheat, barley, rye, oats, or spelt that has leavened
• Ashkenazi Jews also avoid kitniyot — rice, corn, beans, lentils, peanuts, sesame (though this has been relaxed in some communities)
• All regular kosher food must also be Kosher for Passover certified
• Separate Passover dishes, pots, and utensils are used (yes, a third set)
• The kitchen is thoroughly cleaned to remove any trace of chametz
• matzah">Matzah replaces bread

Fast Days

Orthodox Jews fast (no food or water) on:

• Yom Kippur — 25 hours (sundown to nightfall)
• Tisha B'Av — 25 hours
• Tzom Gedaliah, Asara B'Tevet, Shiva Asar B'Tammuz, Ta'anit Esther — dawn to nightfall

Pregnant women, nursing mothers, the ill, and children under bar/bat mitzvah age are exempt from most fasts.

Common Questions

What is the single most important kosher rule? The separation of meat and dairy. It affects every meal, every kitchen setup, and every restaurant choice. Everything else flows from understanding this one principle.

Can Orthodox Jews eat at non-Jewish homes? Generally no — unless the host uses certified kosher food on disposable plates. The issue is not trust but the kosher status of the kitchen equipment.

Is all vegetarian food automatically kosher? No. Vegetarian food can still be non-kosher if it was prepared on surfaces used for non-kosher food, if it contains non-kosher additives (like certain gelatin or wine-based ingredients), or if it has not been checked for insects.

What happens if an Orthodox Jew accidentally eats something non-kosher? If genuinely accidental, it is not considered a willful sin. They may consult their rabbi about any practical implications for their dishes or kitchen.

Are the rules the same for Sephardic and Ashkenazi Jews? Mostly, but with some differences — particularly around Passover kitniyot and kosher vs halal standards. Some Sephardic communities accept certain certifications that Ashkenazi communities do not, and vice versa.