15-60 minutes. It usually takes 15-20 minutes to cook ribs in pressure cooker, 30-40 minutes to cook ribs in ordinary pot, and about 60 minutes to cook ribs until they are rotten. If the amount of ribs is large, the cooking time will be longer, and if the amount is small, the cooking time will be relatively shortened. So the ribs are cooked 15-60 minutes. Pork ribs have high nutritional value, and are rich in protein, fat, vitamins and a lot of calcium phosphate, collagen, bone mucin and so on. When cooking ribs, you can put some vinegar, which can make ribs easier to cook and dissolve minerals such as calcium, phosphorus and iron in ribs, which is beneficial to absorption and has higher nutritional value.