This province hosts most of the Royal Project's development centers, linked to the origin of Thailand's opium-to-coffee history.
Chiang Mai is Thailand's largest province by area and contains the country's tallest peak, Doi Inthanon at 2,565 m. It hosts 27 of the Royal Project Foundation's 38 development centers, the highest concentration in the network that grew out of the 1969 opium-substitution initiative. The King's founding 1969 visit was to an opium-growing village on Doi Pui, a 1,685-meter mountain west of Chiang Mai. No production figures or distinct cup profile specific to Chiang Mai coffee were found. The connection here is institutional rather than a documented, distinctly flavored named lot.
Field notes
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The Royal Project's founding visit in 1969 was to an opium-growing village on Doi Pui, a 1,685-meter mountain west of Chiang Mai.
Varietals
Elsewhere in Thailand
Sources · 4 Every sentence here was checked against a source we read. Taste notes are what guides describe, not promises about your bag. Last revised 2026-11-11. Some details here are less settled than others.
- Chiang Mai province · Wikipedia
- Royal Project Foundation · Wikipedia
- Doi Pui · Wikipedia
- Thailand Coffee: Everything You Need to Know · Coffeeness