Judith Olney's Chocolate Buttermilk Cake

Ingredients

375 gr flour
280 gr cocoa
7 gr baking soda
7 gr baking powder
4 gr cinnamon
525 ml buttermilk
525 ml sour cream
22 gr instant coffee crystals
450 gr sweet butter
450 gr sugar
10 powdered sugar
3 eggs
700 ml cream
3 round
9 cake pans
300 gr butter with the sugar until
10 sugar until
10 sugar
3/8 filling
5/8 frostin

Instructions

Note: The cakes must be well-chilled before assembly, or they will disintegrate under their own weight during assembly. If the cake tops rose during baking, the layers will not stack well. You will need to slice the excess off *after* chilling, but *before* splitting into layers.