Step 1: Boil the Water. Bring 4 cups of water to a rolling boil. You can do this in a kettle or a saucepan on the stovetop.
Step 2: Dissolve Gelatin. In a large heatproof bowl, empty the contents of the 4 packets of sugar-free pink gelatin powder. Carefully pour the 4 cups of boiling water over the gelatin powder. Whisk continuously for at least 2-3 minutes, or until the gelatin powder is completely dissolved. Ensure there are no granules remaining at the bottom of the bowl.
Step 3: Add Cold Water. Pour in the 4 cups of cold water into the dissolved gelatin mixture. Stir well to combine. The cold water helps to cool down the mixture and prepares it for setting.
Step 4: Prepare for Chilling. You can pour the gelatin mixture into a large serving bowl, individual dessert cups, or a 9x13-inch baking dish if you plan to cut it into cubes later. For easy portioning, individual servings are often preferred.
Step 5: Chill Until Set. Place the bowl(s) or dish in the refrigerator. Chill for at least 4 hours, or until the gelatin is firm and fully set. For the best results and a perfectly jiggly consistency, chilling overnight is often ideal.
Step 6: Garnish and Serve (Optional). Once set, you can cut the gelatin into cubes if using a baking dish. Serve plain or garnish with fresh mixed berries (like strawberries, raspberries, or blueberries) and a dollop of sugar-free whipped topping. Enjoy your refreshing treat!