Blue Layer:
1/4 cup pineapple juice, strained to remove solids
1/4 cup vodka
1 envelope Knox gelatin
1/4 cup blue curacao liqueur
1/4 cup coconut rum
Yellow Layer:
3/4 cup pineapple juice, strained to remove solids
1/4 cup Rose's lime juice
1 envelope Knox gelatin
For the blue layer, combine the pineapple juice and vodka in a small saucepan, sprinkle with the gelatin, and allow to sit for 2 minutes. Turn the heat on low, stirring constantly until the gelatin is fully dissolved, about 5 minutes. Remove from the heat and stir in the curacao and rum. Transfer mixture to prepared loaf pan, or fill prepared silicone molds 1/2 way full. (Prepare by spraying lightly with non-stick cooking spray and wiping away excess). Refrigerate until set, about 30 minutes for silicone molds, or 45 minutes for loaf pan.
For the yellow layer, combine the pineapple juice and lime juice in a small saucepan, sprinkle with the gelatin, and allow to sit for 2 minutes. Turn the heat on low, stirring constantly until gelatin dissolves completely. Remove from the heat and allow to cool slightly. Carefully ladle the yellow gelatin mixture on top of the set blue layer. Refrigerate until fully set.
To serve, cut into desired shapes or unmold shots. Makes 18-24 jelly shots.