At 7:15 in the morning, I fired up the mixer to make the batter for this cake. At 7:28, it went into the oven. At 7:45, I finished cleaning up the flour, sugar, butter and chocolate that had sprayed around the kitchen when I accidentally switched the mixer to high speed too soon. Yes, friends, no matter what time of day I bake, and no matter how much coffee I've had in preparation, baking is always a bit of a misadventure. No matter, this mocha sour cream cake is worth the mess, and a last-minute sprinkling of confectioners sugar on top right before you serve hides any little bits that stick to the pan (I'm sure this never happens to you, right?). Even though I baked it, and tasted it, at breakfast time, it's more of a dessert or tea-time cake, topped with a dollop of whipped cream and served with a rich cup of coffee.