Mushrooms can be soaked in cold water for about 40-60 minutes, and in hot water for about 20 minutes. However, the specific time depends on the state of mushrooms. Generally, it can be soaked on the surface of mushrooms, but the soaking time should not be too long. Otherwise, mushrooms will breed a large number of harmful microorganisms such as bacteria, such as Pseudomonas cocoanum, and their bacterial metabolites are toxic, which are called Aspergillus oryzae acid and toxoflavin respectively.

There is no specific time when fresh mushrooms are toxic in water, but they can't be soaked for more than 6 hours at room temperature.

Fresh mushrooms themselves have no toxic substances. Under normal circumstances, soaking in a clean place with clean kitchen utensils will not produce toxic substances. However, if the soaking time is too long, if the container for soaking mushrooms contains toxic substances such as bacteria, it will also lead to mushroom deterioration with toxins, and soaking mushrooms with other moldy and deteriorated foods will also lead to cross-infection and moldy deterioration. Therefore, there is no specific time limit for how long fresh mushrooms are soaked in water, but they are soaked at room temperature.

3 Can dried mushrooms be soaked one night in advance? Yes, but they need to be soaked in the refrigerator.

If dried mushrooms need to be soaked overnight, it is recommended to clean them first, then put them in a box and soak them in water, cover them with plastic wrap and store them in the cold storage area of the refrigerator. When eating mushrooms the next day, it is suggested not to pour out the water soaked in mushrooms, but to make soup, so that the cooked soup will have the delicious taste of mushrooms.

But you can't soak it overnight in a high temperature environment, because mushrooms themselves are perishable foods with many nutrients. In addition, the high temperature environment is very suitable for the growth and reproduction of microorganisms such as bacteria under humid and warm conditions, which easily leads to the deterioration of mushrooms.

4 what should I do if the mushrooms are soaked too much? 1. Drain the water in the refrigerator, put it in a fresh-keeping bowl and refrigerate it for about 2 days, or soak the washed mushrooms in 1% salt water for 10- 15 minutes, drain the water and put it in a sealed plastic bag or a fresh-keeping bowl.

2. Frozen storage If you want to keep it for a long time, you can blanch the mushrooms, then drain the water and put the frozen layer 1 month.

3, dry preservation can drain the soaked mushrooms, and then put them in the sun to dry, or mix them with edible oil and cumin powder, and put them in the oven to dry, which can be preserved for about 3 months.