INGREDIENTS
5
Egg whites, large
3
Eggs, large
2 1/4 cups
All-purpose flour
3/4 tsp
Baking powder
3/4 tsp
Baking soda
9/16 cup
Cocoa powder, Dutch-process
1/2 tsp
Salt
1
Generous pinch Sea salt
3 cups
Sugar
1 tbsp
Vanilla extract
3 3/4 sticks
Butter, unsalted
5 tbsp
Heavy cream
9/16 cup
Water, hot
5 tbsp
Water
2 sticks
Plus 1 tablespoon unsalted butter, at room temperature