Judaism 101: Kashrut: Jewish Dietary Laws

Posted By on July 13, 2015

Level: Intermediate

Kashrut is a set of biblical dietary restrictions Certain foods cannot be eaten Certain foods must be separated Certification makes it easier to identify kosher food

Kashrut is the body of Jewish law dealing with what foods we can and cannot eat and how those foods must be prepared and eaten. "Kashrut" comes from the Hebrew root Kaf-Shin-Reish, meaning fit, proper or correct. It is the same root as the more commonly known word "kosher," which describes food that meets these standards. The word "kosher" can also be used, and often is used, to describe ritual objects that are made in accordance with Jewish law and are fit for ritual use.

Contrary to popular misconception, rabbis or other religious officials do not "bless" food to make it kosher. There are blessings that observant Jews recite over food before eating it, but these blessings have nothing to do with making the food kosher. Food can be kosher without a rabbi or priest ever becoming involved with it: the vegetables from your garden are undoubtedly kosher (as long as they don't have any bugs, which are not kosher!). However, in our modern world of processed foods, it is difficult to know what ingredients are in your food and how they were processed, so it is helpful to have a rabbi examine the food and its processing and assure kosher consumers that the food is kosher. This certification process is discussed below.

Kosher dietary laws are observed all year round, not just during Pesach (Passover). There are additional dietary restrictions during Pesach, and many foods that are kosher for year-round use are not "kosher for Passover." A bagel, for example, can be kosher for year-round use but is certainly not kosher for Passover! Foods that are kosher for Passover, however, are always kosher for year-round use.

There is no such thing as "kosher-style" food. Kosher is not a style of cooking. Chinese food can be kosher if it is prepared in accordance with Jewish law, and there are many fine kosher Chinese restaurants in Philadelphia and New York. Traditional Ashkenazic Jewish foods like knishes, bagels, blintzes, and matzah ball soup can all be non-kosher if not prepared in accordance with Jewish law. When a restaurant calls itself "kosher-style," it usually means that the restaurant serves these traditional Jewish foods, and it almost invariably means that the food is not actually kosher.

Food that is not kosher is commonly referred to as treif (lit. torn, from the commandment not to eat animals that have been torn by other animals).

Many modern Jews think that the laws of kashrut are simply primitive health regulations that have become obsolete with modern methods of food preparation. There is no question that some of the dietary laws have some beneficial health effects. For example, the laws regarding kosher slaughter are so sanitary that kosher butchers and slaughterhouses have been exempted from many USDA regulations.

However, health is not the only reason for Jewish dietary laws. Many of the laws of kashrut have no known connection with health. To the best of our modern scientific knowledge, there is no reason why camel or rabbit meat (both treif) is any less healthy than cow or goat meat. In addition, some of the health benefits to be derived from kashrut were not made obsolete by the refrigerator. For example, there is some evidence that eating meat and dairy together interferes with digestion, and no modern food preparation technique reproduces the health benefit of the kosher law of eating them separately.

In recent years, several secular sources that have seriously looked into this matter have acknowledged that health does not explain these prohibitions. Some have suggested that the prohibitions are instead derived from environmental considerations. For example, a camel (which is not kosher) is more useful as a beast of burden than as a source of food. In the Middle Eastern climate, the pig consumes a quantity of food that is disproportional to its value as a food source. But again, these are not reasons that come from Jewish tradition.

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Judaism 101: Kashrut: Jewish Dietary Laws


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