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.
Where mislabelling concentrates
Not every buying channel carries the same risk, and knowing which one you are in tells you how hard to look.
A producer selling their own tea under their own name has the most to lose from a mislabelled tin and the least to gain, so the checks above mostly come back clean. A specialist importer sits close behind: their reputation is the product.
Risk climbs on open marketplaces. A listing there may be operated by the brand or by a reseller, the reviews attach to the listing rather than to whoever is shipping today, and a tin can sit in a warehouse for a year without anything on the page saying so. Grocery shelves carry a different version of the same problem — the tea is usually what it claims to be, but it has been sitting in light and warmth for an unknown time, which produces a powder that fails the colour test for reasons the seller never intended.
The four Canadian buying channels go through what each one costs once shipping and tax land, which is the other half of this decision.
What the listing photo cannot tell you
Colour is the strongest check you have, and it is worthless on a screen.
Product photography is lit, corrected and often replaced outright with a stock image or a rendering. Two tins photographed by the same studio look identical whatever is inside them, and a powder that reads as vivid jade in a listing can arrive olive. Nothing about this requires anyone to be dishonest; it is what photography does.
So the colour test is an unpacking test, not a shopping test. Do it on the day the tin arrives, while a return is still straightforward, rather than three weeks later when the result is ambiguous — by then ordinary ageing has had time to produce the same dull green that bad leaf does, and you can no longer tell which one you are looking at.
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.