30 to 40 minutes. According to Kyushu Drunk Catering Network, it takes 30 to 40 minutes to stew pork elbows under high pressure. Blanch the elbow before stewing, and add ginger, garlic, onion, cooking wine, white wine, etc. Put it in water to remove the fishy smell of pork, and then put it in a pot for stew. After stewing, add black pepper to increase the flavor of elbow soup. The longer the stew lasts, the softer the elbow will be and the richer and more delicious the soup will be. You can adjust the flavor of the broth, let it cool into pig's trotters and then eat it cold.