2. Slice lean meat and cut mushrooms into strips; Pour the lean slices into a bowl, add proper amount of salt, chicken powder and water starch, and mix well; Pour in an appropriate amount of cooking oil and marinate for 10 minute until it tastes delicious.
3. Boil the water in the casserole, add the rice, pour the appropriate amount of cooking oil and mix well; Bring to a boil, cover it, and simmer for 30 minutes until cooked; Add mushrooms and mix well; Pour in lean meat and shredded ginger and mix well.
4. Add a proper amount of salt, chicken powder and pepper and cook for about 3 minutes until the materials are cooked; Finally sprinkle with chopped green onion.