Mix eggs, quark, mineral water and flour to a smooth dough. Leave to rest for a while. Clean and wash the leek and cut into fine rings. Cook in 1/2 litre boiling salted water for about 10 minutes. Season with nutmeg. Then add sauce thickener, bring to the boil briefly.
In the meantime cut the sausages into slices. Pour corn on a sieve, rinse and drain. Wash the tomatoes, cut them into slices and warm them in the leek for about 5 minutes, refine with crème fraîche and season with salt and pepper. Fry the prepared dough one after the other in a pan spread with oil until you have 4 golden yellow pancakes. Sprinkle vegetables with parsley and garnish. Serve with the pancakes