It is up to you if you want to have the shots start or end with yellow or orange. We ended up doing orange then white then yellow so you can see the clear lines between the colors.
Prep your Jello Shot Cups in a tray or baking dish so they don't slide around and any spills are captured by the tray.
Orange Layer
For the orange layer we use orange gelatin. Combine boiling water and orange jello packets and stir until combined. Add in vodka and stir. Pour into jello shot cups about ⅓ of the way up the cup.
Try to pour evenly across all of the plastic cups. Place in the refrigerator to set. Make sure they are fully set before adding the white layer or the colors will mix together.
We use an angled measuring cup to pour the vodka jello shot mixture into the plastic cups.
White Layer
Combine boiling water with unflavored gelatin in a bowl. Make sure all of the gelatin powder blooms and mixes with the water before moving to the next step.
If the gelatin does not combine your white layer will not set properly.
Combine sweetened condensed milk to the gelatin mixture and stir to combine. Add in vodka and let cool before pouring into the jello shot cups to create the 2nd white gelatin layer.
Transfer to the fridge and let cool completely until set.
Yellow Layer
For the yellow layer we use lemon gelatin to make the yellow layered jello shots.
Combine boiling water and lemon Jello in a bowl and stir until dissolved. Add in vodka and stir together.
Carefully pour yellow jell-o on top of the white layers until the jello shot cup is close to full.
Place the tray of jello shots in the fridge and allow to set before serving.