In a large bowl, combine eggs, milk, bread crumbs, chopped onion, salt, sugar, ginger, nutmeg, allspice, and pepper.

Let the mixture stand until the bread crumbs absorb the milk.

Add ground beef and ground pork; stir until well blended.

Shape the mixture into 1-inch meatballs.

Place the meatballs on a greased rack in a shallow baking pan.

Bake at 400°F (200°C) until browned and a thermometer reads 160°F (70°C), about 18 minutes.

Drain the meatballs and set aside.

For the gravy, sauté finely chopped onion in butter in a large skillet until tender.

Stir in flour and brown lightly.

Slowly add beef broth, cooking and stirring until the gravy is smooth and thickened.

Blend in heavy whipping cream, cayenne pepper, and white pepper.

Gently stir in the meatballs and heat through, but do not boil.