Pork and Mushroom Stir Fry

Name: Pork and Mushroom Stir Fry
Prep time: 15 min
Cook time: 10 min
Total time: 25 min
Cuisine: Chinese
Ingredients: 200 g pork butt or tenderloin (, thinly sliced); 1/4 tsp. salt (, optional (you can skip this for a less salted dish)); 1/2 tbsp. cooking wine; 1/2 tbsp. oyster sauce; 2 tbsp. water or chicken stock; 1/4 tsp. white pepper; 3 tsp. cornstarch; 1/2 tbsp. vegetable oil; cooking oil as needed; 1/2 thumb ginger (,skin removed and sliced); 1 garlic cloves (,sliced); 10 fresh shiitake mushrooms (,remove the roots and sliced); 4 scallions (,cut into small sections white part and green part separated); 1/2 tbsp. light soy sauce; 1 tsp. sesame oil (, optional)