For the cup guglhupf take the cup of sour cream as a measure. Preheat the oven to 160 ° C, grease the mold and beat with breadcrumbs.
First melt the cooking chocolate in a water bath. Mix eggs with warm water, add sugar, add oil and continue mixing vigorously. Stir the melted chocolate to the dough, add nuts.
Mix flour with baking powder and cocoa powder and fold in. Pour the dough into the cake pan and bake for about 40-50 minutes.