Double Cheese Burger

Mix the minced veal with lamb fat until well combined.

Shape the mixture into meatballs, about 120 grams each.

Place the meatballs in a hot pan without adding any fat.

Sprinkle salt and black pepper over the meat while cooking.

Cook the meatballs for about 4 minutes on each side until fully cooked.

Place cheddar cheese slices on the cooked meat and let them melt.

Prepare the sauce by mixing mayonnaise, ketchup, chopped onion, pickles, mustard, and white vinegar.

Toast the burger buns in the pan until golden brown.

Spread a layer of sauce on the bottom half of the bun.

Place the meat with melted cheese on the bun, then add more sauce.

Close the burger with the top bun and serve hot.