Expiration & Storage Tips
When does shiitake mushroom expire?
Fresh shiitake mushrooms can last up to 10 days in the fridge if left unopened and stored correctly. Once opened, it's best to consume them within 7 days. If you find a great bargain of shiitake mushrooms and want to store them for a longer time, you can freeze them. Frozen shiitake mushrooms can stay up to 12 months in the freezer. Do keep in mind that once defrosted, they should be consumed immediately and shouldn't be refrozen.
How do you tell if shiitake mushroom is bad?
Visual inspection is the most effective method to tell if shiitake mushrooms have gone bad. If they appear slimy or there are significant color changes, it's best to throw them away. Additionally, a sour or off smell is also an indication that these mushrooms have spoiled.
Tips for storing shiitake mushroom to extend shelf life
• Store fresh shiitake mushrooms in a paper bag inside the refrigerator. This allows the fungal 'breathing' process to continue and excess moisture to be absorbed by the paper bag, preventing them from becoming slimy and spoiling prematurely.
• If you buy the mushrooms in a plastic wrap or box, make sure to remove them from the packaging as the moisture can cause them to spoil.
• Before freezing, wash and blanch them briefly in boiling water. This preserves their quality and extends their freezer life. Cool them quickly in ice water before draining thoroughly and placing in freezer bags.
• When defrosting frozen shiitake, don't thaw them at room temperature as this can cause the mushrooms to become soggy. Instead, put them straight from the freezer into your cooking pot.