Changes

What does it have to do with food? Quite a lot; cooking is creative work after all, so it's forbidden to prepare any meals on Sabbath. And what if someone did cook a meal on Sabbath anyway? Is it okay for Jews to eat it? The answer is yes, it is, but only after the Sabbath is over. If the meal had been prepared by a Gentile, or even by a Jew, but inadvertently (because, say, they forgot it was Sabbath), then all Jews will be allowed to consume it. If, however, the meal had come about as a result of an intentional violation of Sabbath, then it can be eaten (after the Sabbath) by any Jew except the one who cooked it. As you can see, the The prohibition against working on Sabbath doesn't directly regulate what is or isn't kosher, but still, it does influence what Jews are allowed to eat and drink on that day. The Bible explicitly says that Sabbath meals must be prepared on Friday, so that the Sabbath could be devoted entirely to resting (and eating).

As you can see, different holidays are traditionally associated with different foods. The Feast of Unleavened Bread is exceptional in this regard, as not only is eating unleavened bread, known as ''matzah'', mandatory during that holiday, but consumption of leavened bread is categorically forbidden. And just in case, during the entire holiday (which lasts seven days in Israel and eight days in the diaspora) Jews are prohibited from even having any such bread or unbaked leavened dough (such as sourdough) in their homes.

Phew! I've written a longer text than I'd intended to and still it's but a brief, simplified summary. As you can seeEvidently, the rules of ''kashrut'' are quite complex. It's hard to imagine anyone even remembering all the minutiae, let alone following them in practice. How do Jews deal with them?