Stir the fat until creamy, stir in the sugar, vanilla sugar and eggs well. Sift in the flour and cocoa, mix in. Place small heaps on a greased baking sheet. Bake in a preheated oven at 160 ° C for about 15 minutes. Bring the currant jelly to the boil with 1 tablespoon of sugar, allow to cool slightly. Put 2 cookies together with jelly. Garnish with icing.