Dried mushrooms bring texture and umami savouriness to your cooking. A store-cupboard of dried mushrooms means your dishes will always be full of flavour. Cep powder gives an instant vegetarian flavour boost to almost any European dish. Dried shiitake mushrooms and wood fungus are staples in Japanese, Chinese and Korean cooking.
To replace fresh mushrooms with dried mushrooms in recipes, just divide the weight of fresh mushrooms by 3. A good rule of thumb is that dried mushrooms usually triple in weight when rehydrated.