Whisk eggs, milk, 2 tablespoons of sugar and salt. Gradually stir in the flour. Coat the pan with oil, heat it up and spread some dough very thinly. Bake for about 3 minutes, turning once.
Process the remaining dough in the same way. Makes about 25 pancakes. Heat jam up to 1 tablespoon. Spread the crêpes thinly with the jam and stack them on top of each other. Beat the egg white until stiff. Add remaining sugar, vanilla sugar and lemon juice.
Spread on the stack of crêpes. Bake in a preheated oven (electric range: 225 ° C/ gas: level 4) until golden brown. Fillet three oranges, squeeze the fourth. Cut out small balls from melon pulp.
Warm the rest of the jam, orange juice and liqueur. Toss orange filets and melon balls briefly in it. Dust the cake with icing sugar and cocoa and decorate with chocolate stars.