Spa Girl Cocktails Cucumber is a refreshing and light cocktail made with 50 ml of vodka, 25 ml of lime juice, 25 ml of simple syrup, and a few slices of cucumber. To make this cocktail, combine the vodka, lime juice, and simple syrup in a shaker with ice. Shake until chilled and strain into a chilled martini glass. Garnish with cucumber slices and serve.