Wash the plums, dab dry, halve and stone them. Boil up the plums, 1/8 litre water, 3 tablespoons sugar and cinnamon stick, simmer for 2-3 minutes. Stir starch and some cold water until smooth and add to the plums.
Bring to the boil while stirring and simmer for 1-2 minutes. Remove the cinnamon stick. Let the compote cool down. Separate the eggs. Beat egg yolks, sugar, milk and salt until creamy. Gradually stir in flour and sauce powder.
Beat the egg whites until stiff and carefully fold into the egg mixture. Heat 1 tablespoon of fat in a pan (20 cm Ø). Add 1/4 of the dough and fry over medium heat on both sides until golden brown.
Cut the Kaiserschmarren into large pieces with the help of 2 forks and keep warm. Bake the rest of the dough in the same way. Dust Kaiserschmarren with icing sugar. Add compote.