INGREDIENTS
6
Egg whites
8 tsp
Vanilla bean spread
4 tsp
Baking powder
2 2/3 cups
Cake flour
1 1/3 cups
Granulated sugar
1 1/2 tsp
Kosher sea salt
6 cups
Powdered sugar
2 5/8 cups
Butter, unsalted
1/2 cup
Heavy cream
1/2 cup
Sour cream, full-fat
3/4 cup
Whole milk