In order to observe the Torah-commands in Deuteronomy ch.14.
Eating kosher.
Kosher is the diet of Jews. Jews keep kosher. If you keep kosher you cannot eat: shellfish, pork, or dairy mixed with meat. The main land of Jews is Israel. So technically, the nationality of kosher is Israel.
Because it is a requirement of living life as a Jew as set out in the Torah.
Yes, but Ashkenazi Jews are stricter than Sephardi Jews.
There is no issue with fishing in Judaism as fish are considered a lesser life form. As such, so long as the fish is a kosher species and is killed in a fast and humane manner, it is kosher.
Meat or poultry should have Rabbinical kosher-certification. So, to answer the question, any meat or poultry that is kosher can be eaten by kosher observant Jews.
That depends on what country they're from and where they live. Religiously observant Jews will only eat kosher food.
Anything that's kosher.
Jews are only able to eat kosher food because it is against their religion to eat non kosher food.
Religious Jews eat only kosher foods. Gluten is an ingredient in food.
When it comes to meats, Kosher is not synonymous with Halal, so no, we cannot eat Kosher Gelatin. Gelatin is considered kosher by many Jews regardless of its source of origin. For Muslims, if gelatin is prepared from swine or cows that are not dhabeeha, it is haraam.
Kosher means "fit" or "proper". Kosher food refers to food that has been prepared following the laws of kashrut. The basis for the laws of kashrut is the Torah which provides the general outlines of what is and isn't fit for Jews. The goal of these guidelines, as is the goal of all the guidelines found in the Torah, is to provide Jews a guide to living a righteous and good life.