Chinese Hot and Sour Soup

Procedure

1. Place the two types of dried mushroom in separate bowls. Add enough boiling water to each to cover mushrooms. Let stand until soft.
2. Drain the mushrooms, squeezing them lightly. Reserve the soaking liquid.
3. Cut off and discard the stems from the black mushrooms. Cut the caps into thin strips.
4. Cut off any coarse, woody stems