USDA FoodKeeper – Cold Storage Guidelines
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
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Last reviewed: January 2026
Reviewed by the Can I Eat Expired Editorial Team using official USDA, FDA, and CDC food safety guidance. How we assess food safety risk
This food is often safe when handled and stored properly, but safety depends on how it's been kept and whether any spoilage signs are present.
⏱️ Safe for up to 365 days after expiry if properly stored and showing no spoilage signs.
Pantry
Room temperature
Store in an airtight jar
730 days
Loss of aroma, mold, excessive dryness
Use in teas or tinctures
Reishi, lion’s mane
Cordyceps mushrooms, whether fresh or dried, do not have a strict expiration date like perishable foods. However, they can lose their potency and flavor over time. The best quality of cordyceps mushrooms is retained when they are stored properly in a cool, dry place away from direct sunlight. While they may still be safe to consume after a long time, their medicinal properties may diminish, affecting their effectiveness.
To determine if Cordyceps Mushroom has gone bad, look for any signs of mold, discoloration, or a slimy texture. Fresh Cordyceps should have a firm and dry texture, with no visible mold or off-putting odor. If the mushroom appears mushy, discolored, or has a foul smell, it is best to discard it to avoid any potential food safety risks.
Cordyceps mushrooms are generally considered safe for consumption, but caution is advised when sourcing them. It's important to ensure that the mushrooms are harvested from a reputable source to avoid potential contamination with toxic fungi or heavy metals, which can pose health risks. Individuals with underlying health conditions or allergies should consult with a healthcare professional before consuming cordyceps mushrooms.
To ensure optimal storage of cordyceps mushrooms, it is recommended to keep them in a sealed container in a cool, dark place. Avoid exposure to moisture, as it can lead to mold growth. If you have purchased dried cordyceps mushrooms, they can be stored in the refrigerator to extend their shelf life. Additionally, storing them in a glass container can help maintain their quality for longer periods.
Cordyceps mushrooms, particularly Cordyceps sinensis, have been used in traditional Chinese medicine for centuries due to their believed health benefits. They are often referred to as 'winter worm, summer grass' in Chinese culture because of their unique growth pattern where the fungus infects the larvae of insects, eventually growing out of the insect's body. This process is both fascinating and integral to the cultural significance of cordyceps mushrooms.
Once opened, Cordyceps Mushroom can typically be consumed within 6 months if stored properly in an airtight container in the pantry. Ensure it remains dry and free from moisture to maintain its quality.
If Cordyceps Mushroom has been at room temperature for a day, it should still be safe to eat within 24 hours. However, prolonged exposure to room temperature can affect its quality. Check for any changes in texture, smell, or appearance before consuming.
The type of container can impact the shelf life of Cordyceps Mushroom. Opt for airtight containers to maintain freshness and prevent moisture absorption. Glass or BPA-free plastic containers are recommended for storing Cordyceps Mushroom in the pantry.
Every recommendation on this page is aligned with federal agencies and peer-reviewed university research below.
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperField-to-fridge handling practices that prevent contamination of fruits, vegetables, and leafy greens.
Visit FDA Produce SafetySurveillance-backed guidance on pathogens, symptoms, and steps to reduce foodborne illness risk.
Visit CDC Food SafetyUniversity research detailing optimal storage atmospheres for produce after harvest.
Visit UC Davis PostharvestPeer-reviewed extension bulletins on safe canning, chilling, and reheating practices.
Visit Penn State ExtensionImportant: These are general guidelines based on authoritative sources listed above. Always use your best judgment and when in doubt, throw it out.