INGREDIENTS
3 tbsp
buttermilk
1/8 tsp
baking soda
Yolk of 1 large egg
1/2 tsp
pure vanilla extract
3 tbsp
unsalted butter, melted and cooled
1/2 cup
all-purpose flour, sifted
1/3 cup
sugar
1/4 tsp
salt
6 tbsp
unsalted butter, at room temperature
1/2 cup
powdered sugar
1 tbsp
good quality cocoa powder (I used Valrhona)
1/2 tsp
coffee extract
1 tsp
milk
sprinkles for topping