Homemade Swedish Meatballs

Ingredients

• 1-pound ground beef, 80/20
• 1-pound ground pork
• 2 slices bread
• 1/2 cup heavy whipping cream
• 1/2 small onion, minced
• 3 tablespoons butter, divided
• 1 tablespoon olive oil
• 1 teaspoon salt
• 1 teaspoon black pepper
• 1 teaspoon ground nutmeg
• 1 teaspoon ground allspice
• 2 tablespoons butter
• 2 tablespoons flour
• 2 cups beef stock
• 1/4 teaspoon salt
• 1/4 teaspoon black pepper
• 3 tablespoons sour cream
• 1/2 teaspoon Dijon mustard
• 3 to 4 dashes Worcestershire sauce
• 2 tablespoons fresh parsley, chopped