Possible Clues:

• Dough ball cooked in stew
• Tasty ball of dough cooked in stew
• Food made from scrap fish
• Boiled dough ball
• Store fish - for the stew?
• Stodge you consign to the bin with the fish
• Won ton, e.g.
• Suet ball in e.g. stew
• Fattening food you discard and have fish
• Fruit-filled dessert