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What’s With The Cheese

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JewishTreats.org

When it comes to categories of foods, there are few types of food with as many variations as cheese. Like all dairy products, only cheese that has been made with the milk of a kosher animal can be kosher (For those celebrating August’s National Goat Cheese Month, that’s good news, since goats are kosher animals).

Unlike milk or butter, however, the qualifications for kashrut are a bit more complicated than simply the source of the dairy. In fact, there is a specific prohibition in the Talmud against the consumption of gvinat akum, the cheese of heathens.
“Rabbi Judah said: Rabbi Ishmael put this question to Rabbi Joshua as they were on a journey: ‘Why’ asked he, ‘have they forbidden the cheese of heathens?’ He replied, ‘Because they curdle it with the rennet of a nevelah (an animal that died of natural causes rather than via the required kosher slaughter)” (Avodah Zarah 29b).

The Talmud continues the discussion, but for Jews of the 21st century, this citation captures the heart of the matter: rennet. Rennet, for those unfamiliar with the cheese making process, is a unique complex of enzymes found in the stomach lining of all mammals. Rennet causes milk to separate into curds and whey.

The primary kashrut concern in making cheese with rennet is the source of the rennet. The rennet must come from a kosher animal that has been properly slaughtered and processed. Therefore, cheese needs special supervision (Rabbinic authorities also discuss issues of combining milk and meat that will not be discussed in this Treat).

Today, there are many artificial rennets. The prohibition against gvinat akum, however, is maintained even in cases where a non-animal curdling agent is used. Luckily for kosher turophiles (cheese lovers), the market for more refined cheeses has grown in the last few decades and many “fancy” kosher cheeses are now available.

Copyright © 2012 National Jewish Outreach Program. All rights reserved.

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