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.
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.
Jews who eat kosher will not eat snails since snails are not kosher. However, not all Jews eat according to the laws of kashrut, so some Jews do eat snails.
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.
Anything that isn't certified kosher, that includes meat, poultry, seafood.
They eat kosher meats.
Orthodox Jews are only allowed to eat kosher foods.
Anything that's kosher.
Yes, but Ashkenazi Jews are stricter than Sephardi Jews.
The food has to be kosher.
Religiously observant Jews will only eat kosher food.
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.