This vibrant purple twist on a Tom Collins has a light, citrusy flavor and a stunning hue that makes it perfect for spring parties or happy hour with friends.
Add butterfly pea flowers and water to a medium saucepan and place over medium-high heat. Bring to a boil, then reduce to a simmer for 15 minutes. Remove from heat.
Strain the hot liquid through a fine-mesh sieve to remove the flowers and any solids. Measure the remaining liquid, then return it to the pot over medium heat. Measure out the same amount of sugar as the liquid. Stir until completely dissolved.
Remove from heat and let cool completely.
Store in a clean, food-safe, airtight container such as a mason jar in the refrigerate for up to 1 month.
Butterfly Pea Flower Cocktail
In a cocktail shaker filled with ice, add gin and lemon juice. Shake well.
Strain into a highball glass with ice. Top with club soda.
Serve with butterfly pea flower syrup on the side. Before sipping, add the syrup to the drink and watch the color change before your eyes. Stir gently.
Garnish with a lemon slice and mint sprig, if desired.
Notes
For the most dramatic effect: Serve the syrup separately and pour it into this citrus-based drink just before serving to watch the color shift happen in real time. If you shake them together, you’ll miss out!