Ingredients
8 ounces whipped unsalted butter, softened
Pinch of salt
2 cups sifted confectioners' sugar
1 egg yolk
4 tablespoons heavy cream
4 tablespoons cognac
Preparation
Put ingredients in a food processor and mix until smooth and creamy. Put sauce in tightly covered jar. Refrigerate.
Remove from refrigerator at least 1 hour before serving.