1 cup – about 6 oz semi-sweet baking chocolate – chopped
2 sticks unsalted butter –softened to room temperature – use land o lakes
3 egg yolks
3/4 cup powdered sugar
Instructions
Make or buy the espresso from your local coffee shop
Place the chocolate in a glass bowl, pour the hot espresso over it and heat the mixture briefly, about 30 seconds on high in a microwave and mix with a spatula. Repeat until you have a smooth mixture
Transfer the chocolate to a standing mixer bowl and mix on low speed while adding the butter a little at a time, then add the egg yolks and the powdered sugar
Mix until you have smooth buttercream and stop. Do not overmix
Fill a piping bag with a medium star tip and chill until ready to use