Does Matcha Expire? How to Keep Your Green Tea Fresh for Longer

Matcha lovers know that this vibrant green powder is more than just a trendy drink—it’s a ritual, a source of calm energy, and a powerhouse of antioxidants. But if you’ve ever discovered an old tin of matcha in the back of your cupboard, you might have wondered: does matcha expire? The short answer is yes, matcha does have a shelf life, but with proper storage, you can keep it fresh for longer.

Does Matcha Expire?

Unlike traditional loose-leaf green tea, matcha is a finely ground powder that’s more delicate and sensitive to its environment. While matcha doesn’t necessarily “go bad” in the way that perishable food does, it does degrade over time. The fresher your matcha, the brighter the colour, the smoother the taste, and the more nutrients it retains.

Most high-quality ceremonial-grade matcha is best consumed within 6–12 months of opening. However, if stored properly, unopened matcha can stay fresh for up to 18 months. Beyond that, matcha starts to lose its signature umami flavour and vibrant green colour, turning dull and slightly bitter.

Signs That Your Matcha Has Expired or Degraded

Not sure if your matcha is still good? Here’s how to tell:

1. Colour Changes

Fresh matcha is a bright, vivid green. If your matcha has turned yellowish or brownish, oxidation has taken its toll, and it’s likely past its prime.

2. Faded Aroma

One of the best things about high-quality matcha is its fresh, grassy scent. If your matcha smells dull, musty, or like nothing at all, it has probably lost its freshness.

3. Bitter or Stale Taste

Matcha should have a smooth, umami-rich taste with a hint of natural sweetness. If your matcha tastes overly bitter or flat, it’s a sign that it has degraded.

4. Clumps That Won’t Break

Matcha naturally forms small clumps due to static electricity, but these should dissolve easily when sifted. If your matcha has hard, unbreakable clumps, it may have absorbed moisture, which speeds up deterioration.

How to Properly Store Matcha to Keep It Fresh

To maximise your matcha’s shelf life and maintain its quality, follow these simple storage tips:

1. Keep It in an Airtight Container

Exposure to air speeds up oxidation. Always store matcha in its original airtight tin or transfer it to a resealable, opaque container.

2. Avoid Heat, Light, and Humidity

Matcha is sensitive to temperature and humidity. Store it in a cool, dark place—not near the stove, window, or a humid cupboard.

3. Refrigerate, But Use with Caution

Many tea experts recommend storing matcha in the fridge to keep it fresh for longer. However, always let it come to room temperature before opening to avoid condensation, which can ruin the powder.

4. Use It Quickly After Opening

Once opened, try to consume your matcha within 1–2 months for the best taste and benefits. If you drink matcha daily, buying in smaller quantities ensures freshness.

Now that you know how to keep your matcha fresh, why not treat yourself to a high-quality ceremonial-grade matcha and enjoy it at its best?