My new fave - 3 Cocktails to Make with St-Germain... Cucumber Cooler -In a cocktail shaker, muddle three cucumber slices. Add five to eight fresh mint leaves, an ounce of lime juice, two shots of St-Germain and one shot of vodka. Add ice, shake and strain into a tall glass over fresh ice. Add a splash (about an ounce) of club soda on top. Garnish with more cucumber and mint.