Properly dried mushrooms are very stable. What spoils them is almost always moisture, light or insects. Four rules keep them in good condition.
1. Airtight
Keep the original sealed bag closed, or move the contents to a glass jar with a tight lid. Dried mushrooms pull humidity from the air every time the pack is open.
2. Dry
Avoid kitchens, bathrooms and basements. A small food-safe silica gel sachet in the jar helps in humid climates.
3. Dark
Light fades colour — especially the red of fly agaric caps. A cupboard or an amber or violet glass jar keeps colours longer.
4. Cool
Room temperature or below. Avoid shelves above radiators or in direct sun.
Caps, powder or capsules?
| Format | Tip |
|---|---|
| Whole caps | Store loosely so they do not crush |
| Powder | Most sensitive to humidity — always close tightly |
| Capsules | Keep in the original pack, away from heat |
Signs of moisture
Caps that feel leathery or soft, powder that clumps, or a musty smell mean the material has absorbed humidity. Mould shows as white or green fuzz.
Safety first
Label every jar with the species and keep Amanita well away from food, children and pets.