Let’s start by soaking the mustard greens in water for 10-15 minutes to remove the sourness and saltiness. The store-bought ready-made Chinese mustard green can sometimes be pretty salty. If you are using the homemade Chinese mustard green, you can cut down the soaking time to 5 minutes.
Drain them with clear running water. Pat dry the Chinese mustard greens with paper towels. Then chop them up into small pieces. Set aside.
Set the ground pork in a large bowl, add Shaoxing cooking wine, and corn starch and mix well. Tap in salt and pepper to taste over the ground pork.
Add the cooking oil to a nonstick wok. Heat it on medium-high heat till it is hot, add the green onion (white part), ginger and garlic in, and stir fry until fragrant.
Put pre-marinated ground pork into wok and stir fry until no longer pink.
Fold in Chinese mustard greens, stir frequently, for about 5 minutes.
Add sugar, oyster sauce, light soy sauce and salt, pepper to taste.
Serve it with steamed white rice. Yum! Enjoy!