Frozen Chocolate Charlotte
["2 (12 in each) pkg. ladyfingers", "1/4 c. white creme de menthe or rum", "2 (8 oz.) pkg. semi-sweet chocolate squares", "3 Tbsp. instant coffee", "1/2 c. boiling water", "6 egg yolks", "1/2 c. sugar", "1 tsp. vanilla", "6 egg whites", "1 1/2 c. heavy cream, whipped"]
["Split ladyfingers, but do not separate into individual pieces. Brush flat surfaces with creme de menthe or rum.", "Line sides of a 9-inch spring-form pan with ladyfingers, rounded sides against pan.", "Separate remaining ladyfingers.", "Line bottom of pan, overlapping to fit."]
["ladyfingers", "white creme", "semi-sweet chocolate squares", "instant coffee", "boiling water", "egg yolks", "sugar", "vanilla", "egg whites", "heavy cream"]