This is a so called friendship cake. It works like on of those chain letters you got in your childhood!
Prepare the dough:
Mix 100g flour, 25g sugar, 1/2 pack of yeast and 150ml water into a closed non metalic 1,5l container. Close the container and let it rest for 48h at a warm place. Then put the dough for 48h into the fridge. Stir the dough every day.
Feed your dough:
After this intial phase the feeding phase starts! (EXCITING!)
Day 1. your Hermann is really hungry. Feed it with 100g flour, 150g sugar and 150ml milk
Day 2 – Day 4 stir your Hermann once a day
Day 5 you need feed your Hermann again: Add 100g flour, 150g sugar and 150ml milk
Day 6 -Day 9 stir your Hermann once a day
Day 10 divide your dough into 4! Take one part to bake the cake and give the other 3 parts away with the instructions. Here are the instructions to print out and give to your friends: Instructions
Bake your cake:
Preheat the oven to 180°C.
Take one part of the dough, add 150g sugar, 3 eggs, vanilla sugar, 200g flour, 150ml oil, baking powder, cinnamon and a pitch of salt.
Let the cake bake for 45 minutes.
There are a lot of other recipes on the internet! Feel free to pimp your Hermann!