Looking for a refreshing summer drink? Try this one on for size. On Sunday night, we went over to our friends Mark and Diana’s and they served up a delightful twist on the Pimm’s Cup, a cocktail called The Porch Swing which they learned from Blue Smoke in New York (the restaurant that also catered their wedding). What’s nice about it is it’s not too sweet, it’s not too alcoholic, it’s not too bubbly, but it’s very satisfying on a hot day. Here’s how you make it.