Königsberger Klopse (German Meatballs and Gravy)

Ingredients

• BROTH:
• 4 cups beef broth
• 1/2 cup white wine
• 3 tablespoons capers, drained
• 1 tablespoon cider vinegar
• MEATBALLS:
• 1 pound ground beef
• 1 pound ground pork
• 3/4 cup dry bread crumbs
• 2 large eggs, beaten
• 1 tablespoon butter, melted
• 1 tablespoon anchovy paste
• 1-1/4 teaspoons salt
• 1 teaspoon onion powder
• 1/2 teaspoon garlic powder
• 1/2 teaspoon pepper
• 1/4 cup all-purpose flour
• SAUCE:
• 3 tablespoons cornstarch
• 2 tablespoons cold water
• 1 cup sour cream
• 3 tablespoons lemon juice
• 2 teaspoons grated lemon zest
• 2 tablespoons minced fresh parsley
• Hot cooked wide egg noodles, optional