Sour Cream Coffee Cake

This is as easy to prepare as it is good to eat. Basically a pound cake batter enriched with sour cream, it’s layered with a mixture of cinnamon sugar and nuts—a mixture to which you can add cocoa, currants, raisins, or even a little melted butter. It’s really essential to have the butter, eggs, and sour cream at room temperature for easy mixing, or the final texture of the cake will be heavy and grainy rather than light and delicate.