Sift:
2 cups flour
1 TBS sugar
3 TBS malt powder
1/2 teaspoon salt
1/2 teaspoon yeast
Whisk:
1 stick butter, melted
1 teaspoon vanilla extract or bean paste
2 cups whole milk
2 tablespoons whole yogurt
Add wet to dry and mix well. Lightly cover with plastic wrap and let sit at room temperature overnight or at least 6 hours. Use a large bowl...the batter will rise significantly.
Whisk in 2 egg yolks. Gently fold in 2 egg whites, stiffly beaten.