Finely chop the onion and carrot.
Put minced beef and pork in a bowl, then add the chopped vegetables, bread crumbs, egg, milk, salt, and pepper.
Mix the ingredients thoroughly to make the batter.
Shape the mixture into round, flat patties.
Heat cooking oil in a pan and cook the patties on medium heat until golden brown on both sides.
Plate the Hamburg steaks and serve with your preferred sauce.