What JAS Organic is
JAS stands for Japanese Agricultural Standard. It is the Japanese government’s system of agricultural standards, run by the Ministry of Agriculture, Forestry and Fisheries (MAFF). JAS Organic certification guarantees production without synthetic pesticides or chemical fertilisers for at least 3 years before harvest, under the supervision of a certifying body accredited by the Japanese state.
JAS certifying bodies are private entities accredited by MAFF. The most relevant for tea are Ecocert Japan, OCIA Japan and JONA (Japan Organic & Natural Foods Association).
JAS vs EU Organic vs USDA Organic
| Standard | Where it applies | Mutual recognition | For matcha |
|---|---|---|---|
| JAS Organic | Japan | EU, USDA (partial) | A guarantee of production in Japan |
| EU Organic | European Union | JAS, USDA | Required to sell as organic in the EU |
| USDA Organic | United States | JAS, EU | Relevant if the matcha is sold in the US |
For a British buyer, the standard that counts is the one recognised by the GB organic scheme: since Brexit, organic food sold in Great Britain must be certified by a Defra-approved control body. A matcha certified JAS but not recognised under that scheme cannot legally be labelled organic here.
What organic certification does not guarantee
Organic certification covers the process, not the quality of what comes out. A matcha can be 100% JAS Organic and still be a second harvest, poorly shaded, coarsely milled and mediocre in the cup. No organic certification guarantees ceremonial grade.
The reverse is also true: some of the best first-harvest Uji matchas, made by families who have grown without pesticides for decades, carry no organic certification, because certifying costs money that does not always make sense for a small farm. Certification matters, but it is not the only indicator of quality.