Prepare the Jelly Layers

1. Dissolve the Gelatin: In a mixing bowl, combine one box of flavored gelatin with 1 cup of boiling water. Stir until the gelatin has completely dissolved.
2. Add Cold Water: Stir in 1 cup of cold water and mix well. For a firmer texture, add 1 teaspoon of unflavored gelatin to this mixture. Let it cool slightly.
3. Set the First Layer: Pour the jelly mixture into a rectangular dish (about 9×6 inches). Make sure it’s spread evenly. Refrigerate for about 1 hour, or until set.

Prepare the Creamy Layer

1. Mix the Creamy Base: In a separate bowl, combine the sweetened condensed milk with 1/2 cup of hot water. Stir until smooth.
2. Add Unflavored Gelatin: Dissolve 1 teaspoon of unflavored gelatin into the creamy mixture to help it set. Stir well.
3. Add Creamy Layer: Once the first jelly layer is fully set, pour the creamy mixture gently over it, spreading it evenly. Refrigerate for another 1 hour.

Prepare the Second Jelly Layer

1. Dissolve the Second Gelatin: While the creamy layer is setting, prepare the second flavored jelly layer. Dissolve the second box of flavored gelatin in 1 cup of boiling water and mix in 1 cup of cold water. Let it cool slightly.
2. Add the Second Layer: Once the creamy layer is firm, pour the second jelly mixture on top. Spread it out evenly, then refrigerate for at least 1 hour, or until the jelly is fully set.