Firefly Recipe Posted on July 18, 2020July 18, 2008 by admin Ingredients 1 oz vodka4 oz grapefruit juice1 tsp grenadine syrup Fill a highball glass with cubed ice. Stir in vodka and grapefruit juice. Add the grenadine after stirring, and place it in the center of the drink. Spread the love Related posts: Hawaiian Cool Recipe Jersey Devil Recipe Wine Punch Recipe Frank Davis Punch Recipe