Prepare the bread mixture: Take 1 slice of stale white bread and soak it in 1/4 cup of milk for about 5 minutes. Once soaked, squeeze out any excess milk and crumble the bread into a bowl.
Mix the ingredients: In a large mixing bowl, combine the crumbled bread, 1 lb of ground beef, 1 small finely chopped onion, 1 minced garlic clove, 1 egg, 1 tsp mustard, 1 tsp salt, 1/2 tsp black pepper, 1/2 tsp paprika, 1/2 tsp ground marjoram (if using), and 1 tbsp of chopped parsley. Mix the ingredients gently to ensure they are well combined but avoid overmixing to keep the patties tender.
Shape the Frikadellen: Divide the mixture into 4 to 6 equal portions, then shape each portion into flat oval patties, approximately 1/2 inch thick. The thickness will ensure even cooking.
Cook the Frikadellen: Heat 2 tbsp of oil or butter in a skillet over medium heat. Once hot, carefully add the patties to the pan. Fry for about 4-5 minutes on each side or until they are golden brown and cooked through, reaching an internal temperature of 160°F (71°C).
Serve: Once cooked, remove the patties from the skillet and let them rest briefly. Enjoy them warm with sides like potato salad, mashed potatoes, or rustic crusty bread.