On a sweltering day, there’s nothing better than iced tea and lemonade to cool off. Except for a giant personal air conditioner and a cohort of servants to provide a steady stream of margaritas. But other than that, the Arnold Palmer is the best way to refresh and rehydrate. To keep the drink tasty and to avoid holding a sad, watered-down mess, drop three or four lemonade ice cubes into a glass of room-temperature black tea. It’s so much easier than finding that steady stream of margaritas.