This process can help to remove the odd taste as much as possible. And then in a high pressure cooker or electric cooker or a pot, cover pig trotter with enough water, add ginger slices, green onion, sichuan peppercorn and cooking wine. Cook until you can insert a chopstick into the meat. If you want a softer taste like me, cook it longer. Transfer the pig trotter out and the liquid can be kept as soup stock.