Again from my Yahoo group... I made this so I can say it is yummy. It was also a coarser grain than a normal box mix cake. I also didn't think the cake itself was very sweet as a stand alone cake. I made it 2 layers with canned frosting (half chocolate, half cream cheese whipped together). It didn't last long at all.
SOURDOUGH CHOCOLATE CAKE
½ cup sourdough starter
1 ½ cups all purpose flour
2 cups sugar
¾ cup powdered cocoa (not instant)
1 teaspoon baking powder
2 teaspoons baking soda
1 cup milk
½ cup vegetable oil
¾ cup cold coffee
1 teaspoon vanilla
Put the starter in a large bowl, cover loosely and allow to stand at room temperature until active and bubbling. Then add the rest of the ingredients, in the order given, beating well after each addition. It is not necessary to sift or premix any of the ingredients as long as you are careful to get the baking powder and baking soda evenly mixed.
Grease and flour two 9 inch round cake pans. Pour in the batter, which will be thin, and bake in a preheated 350F oven for about 30 minutes, or until the layers test done when poked with a toothpick. The cake will have pulled away from the sides of the pan.
Allow to cool about 10 minutes before removing from pans, then finish cooling the layers on wire rack. Do not frost until the cake is completely cold.
A mild chocolate butter cream frosting is nice with this cake.
Adapted from: “Baking with Sourdough.”