Corn Yam Pork Rib Soup

1. Prepare ingredients with clean water for later use.

2. Add pork ribs and corn soaked in water to the electric pressure cooker, and press the soup button for 15 minutes.

After 3.15 minutes, exhaust and open the lid. Add yam and cook for another 5 minutes. Season with salt.

4. Add a little scallion.