This is an authentic Alaska Eskimo recipe. Fish ice cream is good stuff. Second, you need berries. Exactly what kind is a major controversy in the villages. I'm a cranberry man, myself.
Tartness goes well with fish.
But a lot of people will defend blueberry fish ice cream to the last spoonful. I guess I should also mention the few perverse souls who prefer salmon berries. Anyway, you need berries. And remember, your choice is a lifetime decision. It's okay to eat any flavor of fish ice cream, but if you're caught making more than one kind you'll lose all social standing.