The dry heat of instant mushrooms is 294 calories per100g, which is not low. Instant dried mushrooms are produced under vacuum condition, in low-temperature vacuum frying equipment, by organically combining frying and dehydration, and under the condition of relative hypoxia.

Ready-to-eat dried mushrooms are processed and produced under the condition of low temperature and lack of oxygen, and additives such as preservatives, pigments and essences can be added, so that the original color and more than 98% nutrients of mushrooms can be maintained, and it is also convenient for packaging, storage and transportation. However, because of the use of frying technology, the fat content of dried mushrooms is high, so the calories are not low and need to be eaten in moderation.