A delicious chocolate cake with an ingredient best kept secret.
1 Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9×13 inch pan. Sift cocoa, flour, baking powder, baking soda and salt together and set aside. In a separate small bowl, combine buttermilk with sauerkraut and set aside.
2 In a large bowl, cream butter, brown sugar and vanilla until light and fluffy. Add eggs and beat in. Add flour mixture alternately with sauerkraut mixture. Beat only until blended.
3 Pour batter into 9×13 inch pan. Bake at 350 degrees F (175 degrees C) for about 45 minutes, or until toothpick inserted into cake comes out clean. Cool cake and frost with your favorite chocolate frosting.