Amish Chocolate Angel Food Cake Recipe

• 2 c. egg whites
• 2 tsp cream of tartar
• 2 c. sugar
• 2 tsp vanilla
• 1 1/4 c. cake flour
• 1/2 tsp salt
• 3 Tbsp. cocoa
• 1/2 c. margarine
• 1/4 c. cocoa
• 1/3 c. buttermilk
• 1/2 tsp vanilla powdered sugar -- as needed

Directions