No. 9 Park

Regulars at No. 9 Park are devoted to the house cocktail for the same reason they are to chef Barbara Lynch’s prune-stuffed gnocchi with foie gras: It’s simplicity perfected. While similar combos at other establishments tend toward the cloying, the Palmyra balances subtly sweet Rain vodka—made from white corn—with locally picked mint and a squeeze of lime to create an irresistible, always refreshing summertime sipper. 9 Park St., Boston, 617-742-9991, www.no9park.com.