M&S Collection Fully Loaded Chicken Shawarma with a Garlic Dressing Irresistibly tender British boneless chicken legs marinated in 14 Middle Eastern inspired herbs and spices with extra virgin olive oil and preserved lemons with a sachet of zesty lemon and garlic yoghurt dressing. Oven cook for an hour or grill on the BBQ. Welcome to Collection from M&S, where exceptional quality and intricate attention to detail makes for something truly special.