Wash, halve and stone the plums. Boil up with 1⁄8 l water, 3 tablespoons sugar and cinnamon. Cover and simmer for about 3 minutes. Stir starch and 2 tablespoons cold water until smooth. Stir into the plums, bring to the boil while stirring and simmer for about 1 minute. Leave to cool. Remove cinnamon.
Separate eggs. Beat the egg yolks, 2 tablespoons of sugar, milk and 1 pinch of salt until creamy. Stir in flour and sauce powder. Beat egg whites until stiff and fold in.
Heat 1 tablespoon of butter in a pan (20 cm Ø). Bake half of the dough on both sides at medium heat until golden brown. Pluck with two forks. Dust with 1⁄2 tsp. icing sugar, continue baking for a short time and caramelise. Keep warm. Bake the rest of the dough in the same way. Serve with compote.