“It’s sort of an unknown region in Southern France, very poor, with incredible food,” explained Henry Moynahan Rich, owner of neighborhood greats like East Williamsburg’s Fitzcarraldo and Rucola in Boerum Hill. He was talking about the inspiration behind Cassette, his new French Catalonian outpost in Greenpoint. “It’s simple, rustic, healthy food, because that’s how I like to eat.”