REHEATING TIP
Preheat oven to 140°C (120°C fan forced). Place the lamb shanks in an oven tray. Add ¼ cup water to the tray. Cover with foil and reheat for 30 minutes to one hour (the timing will depend on how many lamb shanks you are reheating). To reheat the lamb sauce, place in a medium saucepan over medium heat. Bring to a simmer, stirring occasionally. Set aside; keep warm.