INGREDIENTS
1 1/2 cups
3 sticks/342 grams unsalted butter, at room temperature
2 cups
granulated sugar
3
eggs
3
egg yolks
1 tsp
vanilla extract
3 cups
cake flour
1 tsp
baking powder
1/2 tsp
baking soda
1/2 tsp
kosher salt
1 cup
nonfat buttermilk
12 oz
semisweet chocolate, finely chopped
1 cup
heavy cream
1 cup
2 sticks/228 grams unsalted butter at room temperature
1 cup
confectioners' sugar
1/4 tsp
kosher salt
1/2 tsp
vanilla extract