Melt the fat. Mix eggs, milk, flour, salt and melted fat. Cover the dough and let it swell for about 30 minutes. Meanwhile, for the filling, mix quark, sugar, lemon peel and juice, egg yolk and half of the almond slivers. Bake 4-6 pancakes in hot oil in a pan, one after the other, until golden brown on both sides. Take them out and put them warm on a plate in the preheated oven.
Spread the mixed quark evenly on the pancakes. Roll up, possibly halve. Sprinkle the remaining almond slivers on top. Dust with icing sugar. and serve warm. Serve garnished with mint if desired