Clean, wash and cut the leek into rings. Sauté in 2 tablespoons of hot fat for about 2 minutes. Dust with flour and sweat briefly. Stir in 1/2 l water, milk and stock, bring to the boil. Cover and simmer for about 15 minutes
Dice the meat loaf and bread about 1.5 cm. Put them alternately on skewers except for something to garnish. Fry skewers and remaining cubes in 1 tbsp. hot fat until golden brown all around. Season the soup to taste. Serve with croutons and skewers