The amount of time you need to press pig's feet in a pressure cooker depends on your preferred texture and softness. Generally speaking, rinse the pig's feet with water, pour them into the electric pressure cooker and press them for about 15-20 minutes, or after the pressure cooker sputters, put it on high heat for 15 minutes, change to low heat for 10 minutes and simmer it for 20 minutes.1 If you want the pig's feet to be even more soft and melting in your mouth, you can prolong the time of pressing appropriately.