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| oryg = <poem><p dir="rtl" style="text-align: right; font-style: normal">אֶת־זֶה֙ תֹּֽאכְל֔וּ מִכֹּ֖ל אֲשֶׁ֣ר בַּמָּ֑יִם כֹּ֣ל אֲשֶׁר־לוֹ֩ סְנַפִּ֨יר וְקַשְׂקֶ֜שֶׂת בַּמַּ֗יִם בַּיַּמִּ֛ים וּבַנְּחָלִ֖ים אֹתָ֥ם תֹּאכֵֽלוּ׃

וְכֹל֩ אֲשֶׁ֨ר אֵֽין־ל֜וֹ סְנַפִּ֣יר וְקַשְׂקֶ֗שֶׂת בַּיַּמִּים֙ וּבַנְּחָלִ֔ים מִכֹּל֙ שֶׁ֣רֶץ הַמַּ֔יִם וּמִכֹּ֛ל נֶ֥פֶשׁ הַחַיָּ֖ה אֲשֶׁ֣ר בַּמָּ֑יִם שֶׁ֥קֶץ הֵ֖ם לָכֶֽם׃</p></poem>

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| adres rozdziału = https://www.biblegateway.com/passage/?search=Leviticus+11:13-19&version=AKJV

| wydawca = Bible Gateway

[[File:Zwierzęta latające EN.png|400px|left|Winged vertebrates are kosher as long as they're not carnivorous and don't belong to any other forbidden species.]]

| adres rozdziału = https://www.biblegateway.com/passage/?search=Leviticus+11:29-30&version=AKJV

| wydawca = Bible Gateway

| adres rozdziału = https://www.biblegateway.com/passage/?search=Leviticus+11:21-23&version=AKJV

| wydawca = Bible Gateway

[[File:Owady EN.png|400px|right|Insects are all unkosher with the exception of a few species of locust.]]

| adres rozdziału = https://www.biblegateway.com/passage/?search=Leviticus+17:10-14&version=AKJV

| wydawca = Bible Gateway

Blood symbolizes life, and the giver of all life is God. That's why blood is sacred and, in a way, reserved for God alone. Back when the Temple in Jerusalem still stood (ultimately demolished by the Romans in 70&nbsp;CE), the Temple's altar was regularly sprinkled with calf or lamb blood as a sacrifice of atonement. And since the blood was meant as a gift for God, it was off-limits to humans. Hence, the strict and oft-repeated Biblical ban on drinking blood. When broken, it was punishable by God himself setting his face against the perpetrator: I see you, see what you did, and won't forget it.

| adres rozdziału = https://www.biblegateway.com/passage/?search=Leviticus+3:3-5&version=AKJV

| wydawca = Bible Gateway

The above passage is only about bovine suet, but sheep and goat fat is covered by similar regulations.

| adres rozdziału = https://www.biblegateway.com/passage/?search=Genesis+32:24-32&version=AKJV

| wydawca = Bible Gateway

This legend was obviously composed in ancient times for the purpose of explaining an even older and already obscure taboo. What was the original rationale for not eating the sciatic nerve? Nobody knows. What is known is that removing the nerve along with the fat, which tends to grow into the muscle tissue especially in the hind half of the animal, is possible, if done by a skilled butcher, but it's time-consuming and unprofitable on a larger scale. Which is why Jews, traditionally, eat meat solely from the front half of the animal. Their Gentile neighbours have been taking advantage of this tradition for centuries, buying the appetizingly marbled hind meat from Jewish butchers at half price, as related by one 19th-century Polish cookbook writer:

| adres rozdziału = https://www.biblegateway.com/passage/?search=Exodus+34:26&version=AKJV

| wydawca = Bible Gateway

Note that the word "kid" in this English translation is used here in its original sense of "young goat". Of course, one shouldn't take this literally anyway. It's not just about young goats, but any kind of meat in general (including poultry). And it isn't just about the animal's own mother's milk, but any sort of milk. And not just seething (boiling), but any method of food preparation. Just in case, one should never eat any kind of meat together with any kind of dairy products. What do they mean by "together", though? Certainly not as part of the same meal. But what if a piece of meat is stuck between someone teeth after the meal? You never know, so just in case, you must wait six hours after eating meat before you can have anything dairy. And if you'd been having cheese, then you have to wait six hours until you can enjoy meat again.