Ingredients
4 1/2 Tablespoons of butter
1 egg yolk
1 1/2 Tablespoons of milk
3/4 a teaspoon of vanilla
Dash of salt
2 cups of powdered sugar
2 1/3 Tablespoons coco powder
Preparation
Combine all ingredients together except sugar and sit to room temperature. Add powdered sugar, beat until desired consistency.