What you are actually guarding against
The dramatic version — dyed powder, added filler — does occasionally surface, but it is not the realistic risk. The realistic risk is that you pay a ceremonial price for a product that is honestly made and dishonestly described.
Three versions of that account for nearly all of it:
- Powdered sencha sold as matcha. Real green tea, ground fine, never shaded, stems never removed. Harshly bitter and noticeably cheaper to produce.
- Non-Japanese leaf sold as Japanese. Usually by omission rather than a lie — Japanese typography, a Kyoto-sounding brand name, and no country of origin anywhere on the packaging.
- Late-harvest leaf sold as ceremonial. The most common of the three, and the hardest to prove, because the word means nothing in the first place.
Six checks
Before you buy
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Country of origin, printed. Not implied by branding, not “sourced from the finest gardens”. If a seller will not name the country, assume the answer is one they think would cost them a sale.
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Price per gram. Work it out — sellers rarely do it for you. Anything far below the going rate for its claimed grade is claiming something it is not. Our buying guide lists CAD per gram for everything we have tested, as a reference range.
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Harvest information. First harvest, second, or unstated. Unstated is a soft no on anything sold as ceremonial.
After it arrives
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The colour test. Tip a little onto a white plate in daylight. Vivid jade, slightly yellow-leaning, is right. Olive, grey or khaki is late-harvest, oxidised or both. This one check catches more than the other five together.
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The texture test. Rub a pinch between your fingers. Good matcha is startlingly fine — closer to eyeshadow than flour — and clings to the skin. Grit means a coarse grind, which means a fast mill.
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The taste. Whisk a gram in water off the boil, no milk, no sugar. Sweetness arriving before the bitterness is what you are looking for. Immediate harsh bitterness with a dry finish is unshaded leaf, and no technique fixes it.
What the packaging is telling you
Tin size is a signal on its own. Matcha degrades quickly once opened, and producers who care sell the good stuff in 20–40 g tins because they expect you to finish it while it is still worth drinking. A 250 g bag of “ceremonial grade” is a contradiction: nobody drinking straight matcha gets through that before it turns, and the seller knows it.
Look for a packing or milling date rather than only a best-before. A best-before two years out tells you when the seller stopped being liable. A milling date tells you what you are about to drink. Very few sellers print one, which is exactly why it is worth noticing when somebody does.
Vacuum-sealed or nitrogen-flushed packaging inside the tin is another quiet good sign — it costs money and only makes sense if the contents justify protecting. Loose powder in a screw-top jar behind a shop counter has been oxidising in daylight for however long it has been sitting there.
The check that is not a check
Water-solubility tests, teeth-staining, foam height, whether it dissolves in cold water — none of these separate good matcha from bad. They circulate because they look scientific and photograph well. Colour, fineness and taste are what professional buyers actually use, and they are available to you for free.
If you have been sold something mislabelled
Ask the seller for the country of origin and the harvest in writing. Reputable ones answer immediately; the ones who cannot are telling you what you need to know either way. In Canada, food labelling that misrepresents origin is a matter for the CFIA, and a request for a refund that mentions you know that tends to be resolved quickly.
If the tin turns out to be real but simply not what you hoped for, the problem may be the grade rather than the seller — what the grades actually mean is the more useful page in that case.