Does Matcha Expire? How to Keep It Fresh

Matcha, like all teas, is best enjoyed fresh—but even more so due to its fine powder form, which exposes more surface area to air. Over time, oxidation changes its color, flavor, and aroma, making it less vibrant and enjoyable.

I once found an old tin of matcha tucked away and was shocked at the transformation. The vibrant green had faded to a dull, brownish-green, and I wasn’t brave enough to taste it! This got me thinking—how long does matcha last, and how can we keep it fresh?

Does Matcha Go Bad?

Matcha doesn’t “go bad” in the way that perishable foods do, but it does lose its quality over time. If stored improperly or contaminated with moisture, it may develop mold—at that point, it’s unsafe to consume. Otherwise, even past its best-before date, it won’t make you sick, but it will taste stale and lack its original benefits.

How Long Does Matcha Stay Fresh?

Matcha starts losing its peak flavor and antioxidant properties around six months after opening. Proper storage helps, but even then, matcha will eventually degrade.

• Fresh matcha (within 6–12 months of opening) has a vibrant green color, smooth texture, and a creamy, umami taste.
• Old matcha loses its vibrancy, becomes bitter or flat, and doesn’t froth as well when whisked.

How to Store Matcha Properly

To enjoy matcha at its best, follow these tips:

• Choose high-quality matcha. Shade-grown Japanese matcha stays fresh longer than lower-grade versions. Culinary matcha, often used for baking, has a shorter shelf life.
• Avoid clear packaging. Matcha degrades when exposed to light, so buy matcha in opaque, airtight containers.
• Use it regularly. The best way to avoid stale matcha? Drink it daily!
• Keep it airtight. Once opened, store matcha in a sealed tin to protect it from air, heat, and moisture.
• Refrigerate with care. While refrigeration slows oxidation, matcha absorbs odors. Store it in an airtight bag or a dedicated tea fridge.
• Buy in small amounts. Large batches may expire before you can finish them. If you do buy in bulk, transfer smaller portions into a daily-use container.