At the time of the Mishna (200 CE), rabbis deemed it meritorious to eat fish on the Sabbath and Jews became accustomed to eating fish at festive meals. Due to the plethora of rivers in Europe, Ashkenazi Jews tended to cook with freshwater fish. Eastern European Jews would make a mixture of chopped fish, stuff it back into the skin of the fish, and boil it. The word gefilte means stuffed in Yiddish. Gefilte fish is a loaf of chopped up fish, usually white-fleshed freshwater fish such as carp or pike. The chopped fish is generally mixed with onions, carrots and parsley. Eggs and matzah meal hold the mixture together. Below are ingredients for gefilte fish.
Fish Balls
Fish Broth