Separate the eggs. Beat the egg whites with a pinch of salt until stiff, stir the egg yolks with sugar until frothy. Stir in low-fat quark, lemon juice and pudding powder. Fold in the egg whites.
Pour into a small, greased springform pan with a diameter of 18 cm and bake in a preheated oven at 175 ° C (fan oven) for approx. 45 - 40 minutes. If necessary, cover with aluminum foil. Make a chopstick test. Let cool in the oven.