Chocolate mint truffles

• 1 12 oz. package semisweet chocolate chips
• 4 egg yolks
• 1/4 c. butter or margarine, cut into cubes
• 1/4 c. plus 2 TBS sifted powdered sugar
• 1 tsp mint extract
• 4-16 oz. chocolate flavored candy coating
• 4 oz. vanilla flavored candy coating, melted

1. Melt chocolate chips in double boiler.
2. Beat egg yolks until thick and lemon colored. Gradually stir 1/4 of chocolate mixture into yolks. Add to remaining chocolate, stirring constantly. Add butter, sugar, and mint extract. Beat at medium speed until butter melts and mixture is smooth. Cover with paper towel and let stand in a cool, dry place for 1 hour (do not refrigerate).
3. Shape mixture into 1/2" balls. Chill 1 hour or until firm.
4. Melt chocolate candy coating in a double boiler. Remove from heat but leave over hot water. Dip each ball into coating, letting excess coating drip off. Place on wax paper-lined baking sheets and chill until coating hardens. Drizzle with melted vanilla candy coating. Yield: 6 dozen.

Notes:
We made this once. It tasted good but was very hard to make pretty looking truffles.