Butterflied leg of lamb with smoked onions, caraway roasted potatoes and barbecue gravy

By Matt Tebbutt From Saturday Kitchen Ingredients For the butterflied leg of lamb 3 garlic cloves, minced 1 tbsp coarse black pepper 3 sticks rosemary, leaves picked and roughly chopped 2 bay leaves, roughly chopped 4 tbsp olive oil ½ leg of …