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Does Yerba Mate Expire or Go Stale?

Apr 12, 2018

Does Yerba Mate Tea Go Stale?

Wondering if Yerba Mate Expires? Let’s find out

Yerba mate technically can expire if it’s not stored in a cool and dry place. When mate is stored in a dry area, it can become brittle and flaky, and subtle flavors are destroyed. If  it’s stored in an overly-humid place, it’s at risk of mold. However, when properly stored in a dark, dry, and cool locations, such as a kraft paper big, tea tin, or glass jar, yerba mate can actually improve with age, up to several years; such aged yerba mate has a slight yellow hue and still retains a matte sheen on the leaves, without being overly-dry. Aged yerba mate develops subtle, nuanced flavors. A good example would be Anna Park.

How to Properly Store Yerba Mate Tea

Allow me to extrapolate. If you store your yerba mate in a cool, dark, and dry location — preferably in a glass jar or tin — your mate will last way beyond the two year expiration date on the package (those expiration dates on the label have more to do with politics than health when it comes to yerba mate).

In fact, mate will most likely improve with age, with enhanced nuanced flavors and finer aromas. Effectively, as with wine, aging can add complexity to yerba mate.

Understanding the Expiration Date of Yerba Mate

Does Yerba Mate Tea Expire?Remember, if you’re drinking a mate brand directly from South America, the expiration stamp is usually on the side of the bag, sometimes on the top.

How to Determine if Your Yerba Mate Really has Gone Stale?

Three factors are essential for determining the quality of yerba mate.

  1. LOOK. How does the mate look? It should be an olive green with a thin matte sheen.
  2. FEEL. How does the mate feel? It should have some buoyancy and pliancy. The leaves shouldn’t be overly dry and crumble to the touch. You should detect a slight moisture in the leaves and the stems should be an eggshell white to light tan.
  3. SMELL. How does the mate smell? You should detect the general mate bouquet of toasty hay, green vegetables, earth, and a mild sweetness.

That’s about it. More than anything, use common sense to detect the mate’s quality. If it tastes, looks, and smells good, then chances are it’s good. Sip on, Materos!

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