INGREDIENTS
1/2 cup
Egg whites
4
Eggs, large
1 cup
All-purpose flour
3/4 tsp
Baking powder
1/2 tsp
Baking soda
2 tsp
Cocoa powder, unsweetened
1 1/3 cups
Granulated sugar
3/4 tsp
Peppermint extract
1/2 tsp
Salt
3/4 cup
Sugar
2 tsp
Vanilla
3 1/2 oz
White chocolate
1 tsp
White vinegar
2 tbsp
Butter
2 cups
Butter, unsalted
2 tbsp
Buttermilk