Choose from a variety of mushroom species. Freeze Dried mushrooms are definitely a pantry essential, with a very long shelf-life. Freeze Dried mushrooms are easily rehydrated back into fresh mushrooms and utilized in many culinary applications. Simply add directly into soups, stews, pastas, and much more. A simple boil in a broth of your choice, or water will rehydrate dried mushrooms back into fresh mushrooms. Once rehydrated, sauté or add to recipes as needed.