Combine beef and ham , with milk and eggs, onion, bread crumbs, salt, allspice and Shape into meatballs (about 2-inch diameter. (If desired meatballs may be smaller).
Carefully arrange meatballs in crock pot. Cover and cook on low 2-1/2 to 3-1/2 hours.
Turn control to high. Stir in flour that has been dissolved in 1/4 cup water.
Add catsup and dillweed. Cook on high for 15 to 20 minutes or until slightly thickened.
Turn heat off, stir in sour cream.
Servings: 4 to 6