Chocolate Decadent Pie
["1 pkg. crushed chocolate wafers (1 1/2 c.)", "6 Tbsp. melted butter", "1 (12 oz.) pkg. semi-sweet chocolate chips", "5 egg yolks", "3 Tbsp. kahlua", "1 3/4 c. heavy whipping cream plus 1 more c. to whip and garnish"]
["To Make Crust: In food processor, crush chocolate wafers and add butter.", "Press into 9-inch pie plate and freeze for 1 hour."]
["chocolate wafers", "butter", "semi-sweet chocolate chips", "egg yolks", "kahlua", "heavy whipping cream"]