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Kosher, from scratch

What it actually means, why there are levels, and how to read a kosher certificate without being an expert.

2 min readReviewed on Aug 30, 2026

The idea in two lines

Kashrut is the set of rules in Jewish tradition about what is eaten and how it is prepared. The best known: not mixing meat with dairy, eating only certain meats slaughtered ritually (shechitah), and avoiding certain animals (pork, shellfish).

From there come the three categories you will see across the app: basari (meat), chalavi (dairy) and pareve (neutral: neither meat nor dairy — fruit, vegetables, eggs, fish with scales).

Why not every "kosher" is the same

A venue may hold formal certification from a rabbinical authority, have supervision without a published certificate, declare itself kosher on its own, or cook food from the Jewish tradition without kashrut ("kosher-style").

None of those options makes anyone a "better person": they are different levels of assurance, and each person decides which one they need. KosherWorld shows you the declared level of every place so the decision is yours.

How to read a place’s page

The level chip (with certification / with supervision / self-declared kosher / kosher-style) comes first. Then the details: glatt (a higher standard for meat), mehadrin (a higher standard overall), pas yisroel and chalav yisrael (baked goods and dairy with extra supervision).

Golden rule for observant readers: what the app says is for guidance — the current kosher certificate is always verified at the venue itself.

Your next step

See places with a kosher certificate

You can read a level now. These are the ones declaring rabbinical certification.

See certified places

Editorial approach

By KosherWorld editorial teamReviewed on August 30, 2026

This guide summarizes practices that can vary across communities, families, and movements. We compare institutional references from different traditions and avoid presenting one custom as universal.

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