North Haven is a small and rather exclusive island out in Maine's gorgeous Penobscot Bay, inhabited mostly by summer folks and lobster fishermen and their families. The fishermen set and haul their traps, the summer folks sail and feast on lobster, and everyone goes blueberrying in August when the wild berries are ripe. A lady from one of North Haven's long-established summer families gave me this recipe which she said came from a Swedish au pair called Lotta who fell in love either with the father or with the eldest son of the family with whom she was staying. Whichever it was, father or son, it was ill-advised. Lotta was promptly shipped back to Sweden, leaving behind this elegant pie as a sweet memory.