Chocolate and Vanilla Angel Food Cake with "Dipped Cone" Icing

INGREDIENTS

1 cup

cake flour

1 1/2 cups

sugar--divided (I like superfine)

1 2/3 cups

egg whites (10-11 large eggs)

1 tsp

cream of tartar

1/4 tsp

salt

1/4 tsp

almond extract

1 tsp

vanilla extract

3 tbsp

Dutch chocolate, sifted

2/3 cup

heavy cream

4 oz

semi-sweet chocolate bar

1 1/2 cups

heavy cream, chilled

1/3 cup

powdered sugar

1 tsp

vanilla extract