Japanese Matcha Versus Matcha Made Elsewhere

Matcha is now produced outside Japan. There is no internationally standardized definition of the term.

What gets sold as matcha

The category includes:

• Shade-grown tencha, stone-milled
• Leaf never grown under shade, ground into powder
• Green tea powder supplemented with flavoring and coloring

In some jurisdictions all of these can be labeled matcha.

Shading is the fundamental difference

What makes matcha matcha is blocking sunlight during cultivation.

L-theanine, the savory amino acid, converts into astringent catechins under sunlight. Covering the field slows that, producing leaf high in umami.

Without that step: paler color, prominent astringency, limited umami. The same green powder, pointing in a different direction.

Cultivar matters too

Cultivars suited to tencha are limited.

Even Yabukita, Japan's most widely planted, is poorly suited — its yellowish leaf does not darken under cover. Uji cultivars like Samidori, Asahi, and Gokou were selected specifically for how they take to shading.

Planting and establishing suitable cultivars takes years.

And milling method

Stone milling is slow because friction heat would drive off aroma and degrade color — roughly 40 g per hour.

Machine milling is faster and produces coarser particles. Fine matcha reaches 1 to 5 microns; typical powdered tea runs 20 to 50.

It appears in price

Japanese green tea exported to the US carries a unit price roughly five times that of Chinese green tea.

That gap is the accumulated cost of the steps above.

What to check

Origin statement, ingredient list, price.

Whether the list says matcha or powdered green tea is verifiable. So is the presence of flavoring or coloring.

Color intensity and aroma strength are not reliable — both can be produced by additives.

Figures reflect statistics as of 2025.