Preheat the oven to 350 degrees F.
Grease and flour a 14-inch by 1-inch pan.
In a mixing bowl, using and electric mixer, cream butter and sugar until light and fluffy. Add the eggs one at a time.
In a separate bowl, sift together dry ingredients.
Stir the dry ingredients into the egg butter mixture, alternating in two parts with sour cream. Mix in the vanilla.
Gradually add hot coffee (batter will be thin). Stir in the sauerkraut.
Bake 55 minutes or until toothpick is dry to the touch.