Smorgasbord Swedish Meatballs

Preheat oven to 275 degrees. Combine beef, pork, onion, sour cream, egg, breadcrumbs, salt, pepper, and spices with hands. Shape into 1 3/4-inch balls. Freeze on a rimmed baking sheet 30 minutes. Reroll in hands.

Heat oil in a 12-inch nonstick skillet over medium-high heat. Cook meatballs, shaking skillet, until browned and cooked through, about 6 minutes. Keep warm in oven on a clean rimmed baking sheet.

Pour off fat and large brown bits from skillet. Add wine; cook over medium heat, stirring, until mostly reduced. Whisk in flour; add stock. Raise heat to medium-high. Simmer, stirring, until thick, 8 to 10 minutes. Pour through a sieve. Top meatballs with sauce and parsley.