- 1 teaspoon baking soda
- 1 cup buttermilk
- 1 cup butter
- 2 cups sugar
- 4 egg yolks, beaten
- 3 cups flour
- 2 teaspoons cinnamon
- 1 teaspoon nutmeg
- 1 teaspoon cloves
- 1 teaspoon allspice
- 1 teaspoon vanilla
- 1 cup blackberry jam
- 4 egg whites, beaten
- Preheat oven to 300°. Dissolve soda in buttermilk. Cream butter and gradually add sugar; add egg yolks. Sift together flour and spices. Add to creamed mixture alternately with the buttermilk mixture. Add vanilla and jam. Fold in the beaten egg whites. Bake in a well-greased, deep 10-inch tube or Bundt pan in a 300° oven for 15 minutes, then at 350° for 15 minutes, and then at 360° for 30 to 40 minutes. Test with cake tester before removing from oven. Remove from oven, unmold cake to a rack, and cool.