This impressive main is very tender and loaded with dynamic flavor. The doneness of the lamb varies depending on what part of the meat you eat from, making it perfect for a crowd with different preferences. Most grocery stores carry deboned leg of lamb in spring, but you can also ask your butcher to cut the lamb bone out of the leg and to butterfly it. If the meat is thicker than 1 inch anywhere, cut it down to size or cook it longer. Know your grill and make sure to use a thermometer.