Our family uses Ungers Gefilte fish rolls.
Just got the recipe from our home.
It is sometimes cooked on a stovetop with carrots, onions,
some sugar & black pepper.. or sometimes cooked in the oven with a homemade lightly precooked sauce: tomato sauce, ketchup, sugar ,
fried onions, sliced carrots, sugar, black pepper and small chunks of celery. Pour on top of the gefilte fish and bake
covered for 90 minutes in a preheated oven at 365 degrees.