INGREDIENTS
1 cup
cake flour
1/4 tsp
kosher salt
15
large egg whites, at room temperature
1 tsp
cream of tartar
1 1/2 cups
plus 2 tablespoons granulated sugar, sifted 3 times
1 tsp
vanilla
4 cups
powdered sugar
2 sticks
salted butter, softened
1/4 cup
heavy cream
Yellow food coloring