There is no food that all Jews eat by dint of the fact that all Jews are different people with different tastes and choices.
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.
No not if they are vegitarian.
No. That applies mainly to Orthodox and Conservative Jews.
Jews can eat mince. There is no evidence that Jewish people are any different to other humans and all humans are capable of digesting meat of all kinds.
Jews have no dietary restrictions when it comes to plant matter; they eat all of the same vegetables that Non-Jews in the same region eat.
Observant Jews do not eat crayfish.
Orthodox Jewish teenagers eat the same things all Orthodox Jews eat; kosher foods of all different kinds.
Orthodox Jews are only allowed to eat kosher foods.
Muslims and Jews don't eat pork. Muslims eat shellfish, but Jews don't.
Jews eat food -- observant Jews attempt to keep the laws of kashrut by eating kosher food. When? Many Jews eat 3 meals a day with occasional snacks. Some skip breakfast.
no, it is because God's Torah forbids Jews to eat pork. Non-Jews are permitted to eat it.
Yes, Jews can eat chicken. Religiously observant Jews would require that the chicken be kosher.