1 cup flour
1/2 tablespoon sugar
1 teaspoon baking powder
1/4 teaspoon soda
1/4 teaspoon salt
1 beaten egg yolk
1 cup sour cream
1/4 cup milk
1/4 cup melted butter
1 mashed banana
1 egg white, whipped to stiff peaks

Sift together dry ingredients. Set aside. Mix together beaten egg yolk, sour cream, milk, butter and banana. Add to flour mixture, mixing well. Fold in whipped egg white, and pour into oiled waffle iron or oiled pan. Cook each side till brown.