INGREDIENTS
1
Egg yolk
3
Eggs
2 tsp
Baking powder
1/8 tsp
Baking soda
2 cups
Cake flour
1/2 cup
Confectioners' sugar
1/4 tsp
Salt
2 1/2 oz
Semisweet or bittersweet chocolate
1 1/3 cups
Sugar
3 tsp
Vanilla
2 tbsp
Espresso, instant powder
10 tbsp
Butter, unsalted
3/4 cup
Buttermilk
1 cup
Heavy cream
1 8 ounce container
Mascarpone cheese
2 tbsp
Kahlua
10 tbsp
Water