2. soak the fungus, tear it into small pieces
3. soak the yam slices in water
4. mix the sweet and sour sauce, a spoonful of sugar, a spoonful of vinegar, 2 spoonfuls of soy sauce to add the minced garlic
5. add oil to the onion and burst the fragrance
6. pour in the yam, fungus and stir-fry
7. stir-fry for 3 minutes on high heat
8. pour in the sauce
9. Pour in the seasoned sweet and sour sauce
9. Stir fry can be out of the pot
10. color and flavor