Mutton stew in pressure cooker takes less time than ordinary pot on gas stove, and mutton stew is very soft and rotten. Generally, mutton is put in a pressure cooker, then the lid is covered and the gas is turned on, and it can be stewed in about half an hour.
You can't eat directly at this time. You need to pour it out again, put it in an ordinary pot and stew it for half an hour to an hour, so that the stewed mutton tastes richer and more delicious. Of course, you can also stew 15 minutes first, and then stew 15 minutes later, so that the stewed mutton soup is richer and the mutton is softer and more delicious.