How to get a name for the practice of rock sugar, Sydney and tremella soup

First, wash one or half piece of tremella, tear it into small pieces and soak it in cold water for two hours. Peel Pak Lei or Jinfeng pears and cut them into small strips for later use. Boil the pot with water, add tremella, boil over high fire for 1 minutes, simmer for half an hour, add rock sugar, boil the cut pear strips, simmer for 1 minutes, and turn off the fire. It tastes better to add a few raisins before cooking.