Food editor Shira Bocar's drink of choice for summer evenings on Decatur Island is a play on the Negroni, featuring cherry plums muddled with sugar, Aperol (a citrusy Italian aperitif), gin, seltzer, and a twist of orange.
Using a muddling tool or wooden spoon, crush plums and sugar in an 8-ounce glass. Stir in gin and Aperol until sugar is dissolved. Fill with ice; stir in seltzer. Add orange twists and whole plum; serve.