1 cup plus 2 tablespoons Mint Simple Syrup (or 1/2 oz.), how-to follows
Cucumber peels, for garnish
Fresh mint sprigs, for garnish
Steep 2 1/2 cups diced, peeled cucumber in 4 1/2 cups gin, covered and chilled, 8 hours to 4 days (or 1/2 cup cucumber in 1 cup gin). Strain; store indefinitely in the refrigerator.
Heat 1 cup sugar and 1 cup water over medium-high heat, stirring until dissolved. Add 1 cup mint leaves; remove from heat. Cover; steep 30 minutes to 1 hour. Strain; discard mint. Refrigerate up to 2 months.