Galaxy Cotton Candy Lemonade Cocktail (Color-Changing Magic)

0 Butterfly Pea Granita: Add water, butterfly pea flowers, and sugar to a saucepan. Simmer until the sugar is fully dissolved. Turn off heat and cool. Strain liquid into a shallow pan and freeze until solid.
1 Cotton Candy Lemon Juice: Add grapes, water, and lemon juice to a blender. Blend until smooth. Strain the grape juice with a fine mesh strainer.
2 Shred the Granita: Shred frozen granita with a fork until fluffy.
3 The Galaxy Cocktail: To a cocktail shaker or a pitcher, add gin, elderflower liqueur, cotton candy lemon juice and ice. Shake or mix. To serve, spoon about 1/2 cup of the butterfly pea granita into the bottom of a glass and pour in the cocktail mix over top to see the magic.
4 If you want to have all 6 cocktails ready at the same time:• Grab a pitcher and multiply the single cocktail liquids by 6 - 9 oz gin, 3 oz elderflower liqueur, 12 oz cotton candy lemon juice. Stir and keep it chilled.• When guests arrive, add ice to the pitcher and stir again. scoop about 1/2 cup of the blue granita into each glass.• Pour the batched gin mixture over the granita right in front of them so they can watch the magical color change.