Muddle the cucumber and mint with simple syrup. Add everything else, then shake with ice and finestrain over one large cube into a chilled rocks glass. Garnish with a mint sprig poked through a slice of cucumber.
One evening, Lynette Marrero sauntered into East Side Company Bar and requested a gin drink mixed with cucumber. Sam mixed her a gimlet with muddled cucumber and mint he dubbed the "Old Maid." —Sam Ross, New York, 2004