No, but halal-keeping people can eat kosher food, except for anything containing alcohol.
They eat it.
Jews are only able to eat kosher food because it is against their religion to eat non kosher food.
People of the Jewish religion eat 'kosher" (meaning fit) food because that is the way they were commanded by God in the Tanach.
Jews who eat non-kosher food are in violation of the laws of their religion.
Kosher food is not like a specific food. It is not like Hamburgers or anything. SOme foods are kosher and others aren't. Since most people eat all types of food, you can't really avoid eating kosher food.
Jewish Germans eat kosher food. Like in other countries though, many products that are sold in grocery markets have kosher certification.
Hindus do not eat beef no matter if it is Kosher or non-kosher.
The Muslims have their own way of slaughtering animals for food. Where that is not available, they may eat kosher food. They may eat Halal food cooked by the Jews and the Christians.
kosher food is a Jewish concept. However, Hindus (and anyone) who eat STRICT vegetarian (the food can't even touch utensils that have touched meat), are by definition also eating kosher food.
Religiously observant Jews will only eat kosher food.
Any food can be eaten at a Bar/Bat Mitzvah, including traditional and non traditional foods. The Bar/Bat Mitzvah child can pick the food.
The food has to be kosher.