JEN ACKRILL Ackrill tends bar at Waikiki's modern and magical speakeasy, BackBar at SKY Waikiki, a spot she says is superpopular with the ladies. While she loves to mix an Old-Fashioned AF, this summer, Ackrill is debuting the Surfrider, a variation of the Ritz Cocktail with Remy Martin 1738 Cognac, maraschino liqueur, calamansi and Moët & Chandon Champagne—redefining the sultry cocktail. 2270 Kalakaua Ave., Waikiki, 979.7590, skywaikiki.com CHRISTIAN SELF He put Bevy on the cocktail map with his award-winning mai tai almost a decade ago. This summer, he's shaking up signature cocktails with delish clarified juices. At this friendly isle gem, look out for a slushy guava Negroni and spiced paloma to cool down when temperatures soar. 675 Auahi St., Ste. 130, Kaka'ako, 594.7445, bevyhawaii.com TEVES FREITAS He brings a laid-back vibe to Roy Yamaguchi's Eating House 1849, where Freitas wows guests with garnishes almost as special as his cocktails. The pickled li hing mui mangoes on the Drop Baby Drop, a mouthwatering iteration of a Moscow mule, are beyond. 2829 Ala Kalanikaumaka Road, Ste. A-201, Koloa, 742.5000, eatinghouse1849.com