Cook at high pressure for 40 minutes. If you’re using an Instant Pot
, click manual, set timer to 40 minutes, and make sure the valve is pointed to “locked”. If you’re using a stovetop pressure cooker, lock the cover and cook over medium high heat until the target pressure is reached. Turn to medium low heat and continue cooking for 40 minutes. You can either use the natural release or quick release once the lamb is cooked.