The short answer: keep vanilla beans in an airtight container, somewhere cool and dark, at room temperature. Don't put them in the fridge or freezer.
The four things that spoil vanilla
- Air dries the beans out, so they lose moisture and aroma.
- Light breaks down flavour compounds over time.
- Heat speeds up drying and flavour loss.
- Humidity encourages mould.
Good storage controls all four.
The best way to store them
- Keep them sealed. Leave unopened vacuum packs sealed until you need them. Once opened, move the beans to an airtight glass jar or tube, or a resealable bag with the air pressed out.
- Keep them dark. A cupboard or pantry is ideal. If your jar is clear, keep it out of the light.
- Keep them cool. Normal room temperature is fine. Avoid shelves above the oven, near the hob or in direct sun.
- Check them now and then. Open the jar every few weeks to let in a little fresh air and check the beans.
Why not the fridge?
It seems sensible to refrigerate an expensive ingredient, but fridges are humid. That moisture can encourage mould, and the cold can make the beans dry and brittle once they're taken out. Room temperature in a sealed container is better.
How long do vanilla beans last?
Stored well, vanilla beans keep their quality for 12–24 months. They don't go off suddenly, but they slowly lose moisture and aroma over time. Sealed vanilla powder keeps for up to 24 months.
What if your beans have dried out?
Dry, stiff beans still have flavour. Soak them in warm water, milk or the liquid from your recipe for 10–15 minutes to soften them before splitting. Very dry beans are also perfect for making extract, or for grinding into powder.
White crystals or mould?
Fine, glittering crystals on the surface are natural vanillin, which is a good sign. Fuzzy, patchy growth with an off smell is mould. Read how to tell the difference.
Shop gourmet vanilla beans.