Cream butter and sugar together ... blend well. Sift flour and baking powder together and ... hour or until cake springs back when lightly touched ... before removing from pan.
Grease and flour loaf pan. In large bowl ... speed, beat egg whites until stiff peaks form. Fold ... minutes or until cake springs back when lightly touched. ... completely on wire rack.
Combine buttermilk and soda in ... minutes. Beat egg whites until stiff in a small ... until fluffy. Add flour and buttermilk alternately, beating well ... on top of cake.