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Can spoil tea?

  1. Can tea spoil and is it harmful to your health? Maybe you've bought a tea, forgot you had it, and then you find out that the expiration date has passed. Can you still drink the tea or is this no longer safe?

The best before date of tea

  1. There is an expiration date on each package of tea. This is mandatory. This is because manufacturers must indicate a best-before date on every (edible or drinkable) product. This could be:

Deadline?

  1. With many products it is wise to stick to the expiry date. What is important to know is that for certain products the expiration date is mainly on it to guarantee the best taste and smell. This is certainly the case with tea; when you drink tea that is past the expiration date, it may be that taste and smell has been lost. Leaving the bag in your tea glass a little longer solves the problem effectively.

When did tea really go bad?

  1. As mentioned, the taste and smell of tea can deteriorate. This can take years and years and even then you can make a great cup of tea from a very old tea bag. However, there is a way to tell if tea might be 'spoiled' after all. If a layer of oil is visible, it is better not to use it (see the heading tannic acid in tea).

Stale tea

  1. Besides loss of taste, old tea can also have a strange taste. Certain teas, such as black tea or fruit tea, get a musty taste (far) after the expiration date.

Tannic acid in tea

  1. Tannin is a white powder that is used in tea and wine. Tannic acid is a type of tannin. Together with iron, it can form a tannic acid-iron complex, which reduces the amount of iron in your blood and can lead to anemia. The positive effect of tannic acid is that it can partially cancel the effect of theine, for example in green tea. If you keep tea for too long, the tannic acid in it can form an oily film. You better throw the tea away.

How to best store your tea

  1. Although tea cannot spoil that quickly, and some teas may not lose their taste or smell at all, there is something to be said about preserving tea.

  2. Although tea cannot spoil that quickly, and some teas may not lose their taste or smell altogether, there is something to be said about preserving tea.



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