1. The soaking time of dried shiitake mushrooms depends on the soaking method. If it is soaked in warm water, it will take 1-2 hours. If it is cold water or hot water, it will take a long time to soak, which may take about 1 hours. In addition, adding starch, sugar and other auxiliary materials will also speed up the soaking time of shiitake mushrooms, so the specific situation needs specific analysis, and it can be eaten after soaking. It should be noted that soaking mushrooms should not be too long, otherwise some nutrients of mushrooms may be lost.

2. Lentinus edodes, known as the king of delicacies, is a nutritious health food with high protein and low fat, which is deeply loved by most people. Mushrooms are suitable for most people to eat, with high nutritional value, and contain a lot of vitamin D. Although they lack vitamins A and C, they also contain a lot of amino acids such as glutamic acid and protein, especially agaric acid, mushroom acid and goose acid, which are lacking in daily food. They are delicious and easy to be absorbed and digested by human body.

3. When buying dried shiitake mushrooms, the high-quality shiitake mushrooms have thick meat, smooth surface and uniform size, tight and white pleats, short and thick stalks and thick edges. The color is yellow-brown or black-brown, and the mushroom noodles will be slightly frosted and have a strong aroma. Moreover, dried shiitake mushrooms have a certain moisture content, and the appropriate moisture content is 11%~13%. If you pinch them gently, the shiitake mushrooms with cracks on their surfaces are not high-quality shiitake mushrooms.