3 Butter the molds and sprinkle with sugar. Preheat the oven to 180 C ° and place a container with water on the bottom rail of the oven, or a deep tray.

Beat the egg yolks with 30 g of sugar for about 2 minutes. Stir in the quark and lemon zest. Beat the egg whites with the salt and the remaining sugar until stiff

Now fold the egg white into the quark mixture and bake everything in the molds for about 20 minutes, do not open the door.