Ah, the perfect hot-weather cocktail: minty, fizzy, sweet and strong. Legend has it that the Southside was invented during Prohibition by Chicago mobsters to disguise the taste of bathtub gin. These days, tony beach clubs along the Atlantic (no, the whole coast isn’t totally Snooki-fied) serve it up in summer with rum instead of gin for a Jersey Shore twist on the mojito. P.S. It’s surprisingly boozy, so sip slowly, my friends!