Pork belly with salt, vinegar, flour scrub clean, and then scalded for 15 seconds and then rinsed with hot water.

Use a knife to scrape off the white lipid material that appears after rinsing, scrape clean and then rinse clean.

After washing the pork belly, change the knife, cut into suitable size, yam peeled and cut into pieces.

In the casserole put water, white pepper, ginger boiling, into the pork belly.

Add appropriate amount of cooking wine and simmer for one hour.