M&S Gastropub Lamb Boulangere Our French style, restaurant quality, hotpot contains British lamb shoulder slowly braised until tender, smothered with slices of potato, cooking stock and caramelised onion and finished with a mint butter for basting. Serve with greens and a Rioja Reserva. Oven cooks in 40 minutes. Serves 2. Recreate that Gastropub experience at home with restaurant quality classics from M&S, for the ultimate night in.