½ cup chopped fresh rhubarb (not peeled)
1 teaspoon sugar
3 slices cucumber
1 sprig fresh mint
2 ounces white rum
1 ounce rhubarb liqueur
In a large cocktail shaker, muddle the rhubarb with the sugar until well smashed. Add the cucumber and mint, then bruise with the muddler. Add the rum and rhubarb liqueur and shake until well combined. Strain the mixture into a cocktail glass filled with ice, then top with seltzer water. Stir gently to combine.
Alison Ladman, for the Associated Press