Frikadelle or Meatballs from Northern Europe for Super Bowl - Cooking by the Book

Ingredients

• Freshly cracked black pepper
• ⅓ cup mashed potato
• 1 cup, firmly packed, ground beef
• ½ cup ground veal
• ½ cup ground lamb
• ½ cup dried breadcrumbs
• 6 tablespoons light cream
• 1 egg, beaten
• Pinch of freshly grated nutmeg
• 1 canned anchovy fillet, mashed
• Pinch of ground allspice
• Salt and freshly ground black pepper
• 3 tablespoons butter
• 1 small onion, finely chopped
• 2 tablespoons vegetable oil rosemary sprigs, for serving