In a normal restaurant (non‑Jain), a Jain has to be a bit careful. Here’s a simple, practical guide.

1. Basic Jain rules (always)

In any place, a Jain should avoid:

• Meat, fish, eggs, egg‑based products
• Root vegetables (potato, onion, garlic, carrot, beet, radish, etc.) – many Jains follow this strictly
• Honey
• Alcohol and alcoholic desserts
• Strongly fermented foods (wine/vinegar, yeast‑heavy items, etc., depending on your strictness)

These are based on ahimsa and are the same at home or outside. You can read general food rules here .

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2. What you can usually order in a restaurant

Prefer a pure vegetarian restaurant if possible. In any menu, look for:

• Clearly vegetarian dishes (no meat/fish/egg)
• Items without onion & garlic (many places in India know “Jain option / no onion‑garlic”)
• Dishes where potato and other roots can be removed or substituted (if you avoid roots)
• Plain foods:

- Plain rice, dal without onion‑garlic - Simple vegetable dishes made from allowed vegetables - Roti/chapati/naan without butter made from animal fat, egg, or garlic - Salads with allowed vegetables (no onion, no root veg; careful with dressings and vinegar)

• Beverages: plain water (prefer bottled), simple fruit juices without preservatives or alcohol

Always check ingredients politely: “Is this without onion, garlic, egg, and meat? Any alcohol or wine vinegar?”

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3. Things to be careful about

Even in vegetarian dishes, watch out for:

• Hidden egg (in cakes, mayonnaise, some breads, some pasta)
• Onion/garlic in almost all gravies, sauces, pizza bases, pastas, Chinese food, etc.
• Stock/broth made with meat or fish (soups, sauces)
• Gelatin, animal‑based cheese (rennet), fish sauce, oyster sauce
• Vinegar and alcohol‑based flavourings (in some sauces, desserts)

If in doubt, choose the simplest item (plain dal‑rice, simple sabzi, basic roti).

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4. Time and purity (for more strict Jains)

• Prefer to eat only in daylight (no food after sunset).
• Prefer freshly cooked food; avoid leftovers and buffet food kept out for long.
• During Paryushan/vrat, outside food (restaurant, delivery) is usually avoided completely; only very simple home food is taken.

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5. Small difference: Śvetāmbara / Digambar

• Both follow ahimsa and vegetarianism.
• Many Śvetāmbara lay Jains avoid roots;
• Digambar lay Jains are often even stricter about simplicity (timing, type, and quantity of food), especially on fast/vrat days.

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In short: In any restaurant, a Jain should choose pure vegetarian, no egg, no meat, no onion‑garlic, no alcohol/honey, and as few root and fermented items as possible, and keep food simple and fresh.