Dutch-Chocolate Angel Cake

Ingredients

• 1 cup sifted cake flour
• 1 1/2 cups sugar, divided
• 1/4 cup Dutch-process cocoa
• 1/4 tsp ground cinnamon
• 12 large egg whites
• 1 tsp cream of tartar
• 1 tsp salt
• 2 tsp vanilla extract
• 1 1/2 tsp fresh lemon juice
• 1/2 tsp almond extract
• Dark Cocoa Sauce