INGREDIENTS
•
4 oz egg whites--room temperature
•
1 cup whole milk--divided--room temperature
•
2 1/4 tsp vanilla
•
3 cups sifted cake flour
•
1 1/2 cup sugar
•
1 Tbs + 1 tsp baking powder
•
12 Tbs unsalted butter-room temperature
•
1/4 tsp kosher salt (my addition)