French Pastry Cake - cooking recipe

Ingredients

1/2 cup butter
2 cups sugar
2 cups flour
1 cup sour cream
1/2 teaspoon baking soda
1/4 teaspoon salt
2 teaspoons vanilla
1/2 cup cocoa powder
3/4 cup hot water
3 egg whites, beaten stiff
powdered sugar, for topping

Preparation

dissolve cocoa into hot water; let cool while you prepare other ingredients.
cream butter and sugar well.
add flour, sour cream, baking soda, salt and vanilla.
add cocoa mixture.
fold in egg whites.
pour into greased 9x13 pan.
bake at 350\u00b0 dor 15 minutes.
lower oven to 325\u00b0 nd bake for an additional 20 minutes or until tests clean.
when cool, sprinkle generously with powdered sugar.