Chocolate Truffles

Procedure:

1. Beat the butter and confectioners' sugar in a medium bowl until pale and creamy. Beat in the egg yolks one at a time.
2. Bring the cream to a boil. Remove from heat and add vanilla extract.
3. Pour the boiling cream into the butter mixture. Add the chocolate and stir until smooth and well mixed.
4. Let cool for at least 2 hours.
5. Shape into balls the size of walnuts. Roll one-third of the truffles in the cocoa, one-third in the coconut and one-third in the nuts.
6. Chill in the refrigerator until ready to serve.