Make the Blue Layer: Add the berry blue Jello powder to a mixing bowl. Pour in 1 cup boiling water and whisk until the Jello is fully dissolved.
1 3- ounce box berry blue Jello, 1 cup boiling water
Add Vodka: Stir in ½ cup cold water and ½ cup vodka. Mix until smooth and evenly combined.
½ cup cold water, ½ cup vodka
Fill the Cups: Place the plastic shot cups on a baking sheet so they are easy to move. Pour the blue mixture into each cup, filling each one about one-third full.
Chill the Blue Layer: Transfer the tray to the refrigerator and chill for 2 to 3 hours, or until the blue layer is firm.
Bloom the Gelatin: Sprinkle the unflavored gelatin over ½ cup cold water in a clean mixing bowl. Let it sit for 5 minutes, until it thickens and looks slightly jelly-like.
1 packet unflavored gelatin, ½ cup cold water
Make the White Layer: Pour 1 cup boiling water over the bloomed gelatin and whisk until fully dissolved. Add the sweetened condensed milk and whisk until smooth.
1 cup boiling water, ½ 14- ounce can sweetened condensed milk
Cool the White Layer: Let the white mixture cool to room temperature before adding it to the cups. If it is too warm, it can melt the blue layer and ruin the clean stripes.
Add the White Layer: Once the blue layer is firm, carefully pour the white mixture over it, filling each cup to about two-thirds full. Return the tray to the refrigerator and chill for another 2 to 3 hours, or until firm.
Make the Red Layer: Add the cherry or strawberry Jello powder to a clean mixing bowl. Pour in 1 cup boiling water and whisk until fully dissolved.
1 3- ounce box cherry or strawberry Jello, 1 cup boiling water
Add Vodka Again: Stir in ½ cup cold water and ½ cup vodka. Let the red mixture cool to room temperature before pouring it over the white layer.
½ cup cold water, ½ cup vodka
Add the Red Layer: Once the white layer is firm, carefully pour the red mixture on top, filling each cup almost to the top.
Chill Until Set: Refrigerate the shots for 2 to 3 hours, or overnight for the cleanest layers.
Garnish Before Serving: Right before serving, top each Jello shot with a small dollop of whipped cream and red, white, and blue sprinkles.
Whipped cream
Serve Cold: Keep the Jello shots chilled until ready to serve. These are for adults 21 and over, so keep them clearly labeled and away from kids.