This is Hermanni, a living cake that has been in our care for the last 10 days. My version was in the end spiced with banana chunks, hazelnuts and hazelnut chocolate pieces. Tasty! But I must admit that the principles behind this kind of chain letter cakes escape me — the dough is distributed from friend to friend, fed with sugars and then divided and fed again. And eventually you can put it in the oven and bake it. And eat. Supposedly it gets its yeast directly from the air or something?