Mix the butter with the sugar until frothy. Mix in the eggs one by one. Mix the flour with baking powder, cocoa and cinnamon, sieve and stir in. Stir in coffee and nuts. Pour the dough into a very well greased bundt pan, sprinkled with breadcrumbs.
Bake in a preheated oven at 175 ° C for approx. 45 minutes (stick test). After cooling, cover with chocolate icing and decorate with mocha beans.