In a small bowl, sprinkle the gelatin over the cold water and let it sit for about 5 minutes to soften.
Pour the Coca-Cola into a saucepan and place it over medium heat.
Add Lemon juice and the softened gelatin mixture to the pan with coca cola.Stir until the gelatin is completely dissolved.
If you prefer a sweeter jelly, add the granulated sugar to the Coca-Cola mixture and stir until dissolved.
Remove the saucepan from the heat and let the mixture cool for a few minutes. Then pour it into your desired molds.
You can use silicone molds, small cups, or any other heatproof container.
Place the molds in the refrigerator and let the jelly set for at least 4 hours, or until firm.
Enjoy!