3 env. Knox unflavored gelatin
3 pkgs. (3 oz. each) flavored gelatin
2 1/2 c. boiling water
1 c. (1/2 pt.) heavy cream

In large bowl combine Knox with flavored gelatin. Add boiling water and stir until gelatin is completely dissolved. Stir in cream. Pour into 9x9 baking pan. Chill until firm. Cut into one inch squares.