Ingredients:
- 3/4 cup unsweetened cocoa, plus more for dusting finished cupcakes
- 2 cups sugar
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- Pinch fine salt
- 1 bottle stout beer (recommended: Guinness)
- 1 stick butter, melted
- 1 tablespoon vanilla extract
- 3 large eggs
- 3/4 cup sour cream
- 1 (8-ounce) package cream cheese, softened at room temperature
- 3/4 to 1 cup heavy cream
- 1 (1-pound) box confectioners’ sugar