1. Boil the choy sum in a pot.
2. After the cabbage is blanched and softened, quickly put it in cold water.
3. Mix white sugar, white vinegar, ginger and mustard oil into sweet and sour mustard juice.
4. Drizzle the sweet and sour mustard juice on the drained choy sum.
5. Add a little mustard sauce and garnish with scallion white and red pepper shreds.
Tips:Taste: refreshing and crispy, spicy and fresh.
Tips: You can mix mustard juice according to your taste.
