Squeeze out excess milk from the bread roll. In a bowl, combine the minced meat, squeezed bread, diced onion, 1 teaspoon tomato paste, 2 teaspoons medium-hot mustard, the pressed garlic clove, a pinch of marjoram, salt, and pepper. Mix well and season to taste.
Shape the mixture into patties.
Heat clarified butter in a pan over medium heat. Add the patties and fry for about 15 minutes, turning several times, until cooked through.