Stir bread crumbs into milk or water;mix well.Beat in unbeaten egg and minced onion.Add salt,pepper,nutmeg and ground beef;mix thoroughly. Divide meat mixture into 50 to 60 even portions.Shape into small balls Melt butter or margarine in skillet.Add meatballs;brown thoroughly, shaking pan occasionally to keep balls round.Add water;cover skillet. Simmer 20 minutes.Yield: 50 to 60 small meatballs.