CRUST:

1 1/2 c. finely crushed chocolate wafers
6 tsp. melted butter

Mix the above and press into a 10 inch pie shell or springform pan. Freeze for 1 hour.

FILLING:

1 pkg. (12 oz.) chocolate chips
5 egg yolks
3 tsp. liqueur (kahlua, creme de menthe, chambord, etc.)

Combine the above in a blender. 1 1/2 cups heavy whipping cream, heated to boiling. With blender on low speed pour hot cream into chocolate mixture (hot cream will melt chips and cook yolks). When all has been added, cover and blend on high for 1 minute. Pour into frozen shell and chill at least 3 hours. Garnish as desired.