Cream together butter, sugar, and egg.
Sift the cake flour, baking soda, salt, and powdered cocoa.
Gently stir in the flour and cocoa mixture, the buttermilk, and walnuts.
When ingredients are well mixed, pour into a greased loaf pan.
Bake at 350 degrees for 1 hour, or until silver knife comes out clean.
Yields one large loaf.
If you wish to drizzle a glaze over the Chocolate Tea Bread, mix 1/2 cup powdered sugar with 1-1/2 to 2 teaspoons water until smooth. Drizzle and let set for 15 minutes before slicing.
You may also bake the batter in mini loaf pans. Divide the batter between 3 mini pans and bake 35 - 40 minutes.
I think some mini chocolate chips would be yummy in this recipe too!