Pork and beans is always, to me, a thrilling combination and a wonderful thing to eat year-round, but fresh shell beans are a seasonal treat not to be missed. In the South, black-eyed peas, crowder peas, and fresh limas are longtime favorites and farm stands there always have them fresh in season. More and more, fresh shell beans, such as cranberry, flageolets, and cannellini, are appearing in farmers’ markets around the country. If the beans are already shucked, packed in a little bag, it’s a gift. If you can’t find them fresh, substitute dried heirloom beans from a recent harvest. Summer shell beans cook quickly, usually in 30 minutes or so, and have a sweet, creamy succulence.