JelloIn a heatproof jug place 2 cups of boiling water and dissolve 1 sachet of Jello and 1/2 teaspoon of gelatin.
Set aside to cool for 10 minutes.In a second heatproof jug place the other 2 cups of water and dissolve the second sachet of Jello and 1/2 teaspoon of gelatin.
Set aside to cool for 10 minutes.Line 2 rectangle containers with cling film and pour one flavor of Jello into each container.
Place in the fridge to cool for at least 4 hours or overnight is best.