Wait for the black fungus to soak for about 5 minutes, drain the water from the black fungus, and put it into a bowl for later use. 4. Prepare the onions, coriander and cold sauce, add them all into a bowl, and use wooden chopsticks to stir all the food and black fungus evenly, then place it on a plate and serve. After making the cold fungus, I usually put it in the freezer and marinate it for more than 10 minutes, so that the black fungus will become more flavorful. Compared with the freshly pickled black fungus, the black fungus tastes particularly delicious. It has a fragrant and salty taste, and the taste is particularly good. Friends who like to eat fungus, the final thing to note is that although the cold fungus is delicious, if you make a good cold fungus, you can only eat it once, and you will not be able to eat it the next meal. Since black fungus will contain toxic substances after being put in it for a period of time, it must not be eaten due to the health of the human body. Therefore, every time you make cold fungus, prepare as little as possible.