Beat soft butter with sugar, adding one egg at a time. Then add flour, baking soda and baking powder, sour cream and beat well.
Add cocoa to half the dough and mix until smooth.
Smear a baking dish with a little butter, start to pour the dough in the center of the form, first with white, then chocolate, and so on, alternating the whole dough.
Bake the Zebra pie in a preheated oven to 180 degrees 35 minutes.
Zebra cake is ready, you can pour the top with chocolate icing.