Use a large bowl and pour the lime Jellow mix into it and add 1 cup of boiling water and stir until the Jello powder has completely dissolved (around 2 minutes).
Mix in 1/4 cup of cold water to cool down the mixture, when it cools off (but before it sets!) add the spiced rum, coconut rum, blue Curaçao, melon liqueur, and a splash of pineapple juice, then stir well to mix everything – consider premixing the liqueurs and juices in a cocktail shaker before adding them, to make mixing easier.
When mixed, arrange your shot glasses or cups on a tray and carefully pour the Jello mixture into them – if wanted, add some garnish like a cherry or pineapple to it.
Place your tray with the shot glasses in the refrigerator and let them set for at least 4 hours, or even better, overnight.
Once they’re set, feel free to enjoy them