Pretty much anything, so long as it's kosher. See the attached Related Link.
The Torah and Talmud.
Of course Jews can have parties! Even the most devout orthodox Jews celebrate holidays and special occasions with music and dancing like everyone else! example: Bar Mitzvahs
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.
The marks are known as "Hechshers" and they let Jewish people know if the food is okay for them to eat. Most devout Jews have guidelines as to which foods are kosher for them to consume.
Observant Jews do not eat crayfish.
Muslims and Jews don't eat pork. Muslims eat shellfish, but Jews don't.
Orthodox Jews are only allowed to eat kosher foods.
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.
The Torah states that Jews should eat kosher food.
Yes, Jews; as well as Muslims; can eat duck meat,