Jell-o Directions 1. Stir 2 cups boiling water into gelatin in medium bowl at least 2 minutes until completely dissolved. 2. Stir in 2 cups cold water. 3. Refrigerate 4 hours or until firm. Makes 8 (1/2 cup) Jel-o Small box Add mix to 1 cup boiling water, stir until dissolved. Add 2 cups ice cold water, refrigerate until it sets.