INGREDIENTS
4
Egg whites, large
3 tbsp
Corn syrup, light
4 tsp
Baking powder
3 cups
Cake flour
3/4 tsp
Salt
4 1/2 cups
Sugar
3 1/4 tsp
Vanilla
4 tbsp
Butter, unsalted
2 1/2 cups
Whole milk
¼ pound plus 4 tablespoons (1½ sticks) unsalted butter, cut into 1-tablespoon pieces, at room temperature