Crush the yeast with 1 teaspoon sugar and set aside for 10 minutes. In a bowl, add the remaining sugar (5 tablespoons), flour, warm milk, eggs, yeast, and mix until smooth. Set aside in a warm place covered for approximately 30-60 minutes to rise.
Fry like traditional pancakes, layer with roasted apples and drizzle with chocolate sauce: heat half the milk with cocoa, combine the remaining milk with potato starch, bring together to a boil. While constantly stirring, add egg yolks with sugar and vanilla sugar.