– 1 large onion, finely chopped
– 2 cloves garlic, minced
– 1 tablespoon olive oil
– 2 pounds ground beef (or a mixture of ground beef and pork)
– 2 large eggs
– 3/4 cup breadcrumbs
– 1/4 cup milk
– 1 teaspoon salt
– 1/2 teaspoon black pepper
– 1/2 teaspoon ground allspice
– 1/4 teaspoon ground nutmeg
– 3 tablespoons all-purpose flour
– 2 cups beef broth
– 1 cup sour cream
– 2 tablespoons Worcestershire sauce
– 1 tablespoon Dijon mustard
– Fresh parsley, chopped, for garnish