Melt the lard, let cool down a little. Add sugar, 1 vanilla sugar, egg yolk and salt and stir well. Dissolve deer horn salt in a little water and add it together with the flour. Knead everything well. Remove half of the dough and knead in the cocoa and 1 vanilla sugar.
Shape approx. 90 pieces into a ball and press in a little in the middle.
It is baked at 200 ° C top / bottom heat for about 15 - 20 minutes. The cookies should stay light.