Beat the egg whites vigorously with a hand mixer, then sieve in the sugar and continue beating vigorously.
Beat the egg yolks separately until creamy, then pour over the egg whites and stir in. Slowly stir in the flour with the whisk. Put the whole thing in the greased springform pan and bake for 20 minutes at 150 ° C in the preheated oven.
After baking, place baking paper on the table and turn the biscuit out of the springform pan onto it. Pour the cream into a bowl the same size as the springform pan and slowly slide the biscuit off the baking paper into the bowl.
Stir the condensed milk and milk together and pour them onto the surface in a spoonful. Pour caramel sauce over them. Put briefly in the refrigerator.