Mix eggs, 1/4 l milk, 1 tablespoon sugar, 1 pinch of salt and flour to a smooth dough. Let it swell for 10-15 minutes. Then stir in mineral water
Pour 1/4 l of milk into a high mixing bowl. Stir in sauce powder. Whisk vigorously for about 1 minute. Mix quark with vanillin sugar and 2 tablespoons sugar. Peel banana, cut into thin slices and sprinkle with lemon juice. Stir into the quark
Heat the fat in portions in a small coated pan (approx. 16 cm Ø). Bake 8 thin crêpes from the dough one after the other. Keep warm if necessary. Spread the crêpes with banana quark and fold them in. Serve with chocolate sauce