[QUOTE="Deleted User All of the information lines up: Vanuatu kava is largely adulterated with tuday.[/QUOTE]
Good points, but it's probably worth qualifying one statement by saying that Vanuatu kava specifically grown for export is largely adulterated with tudei, ie. not all Vanuatu kava.
As we know, tudei is rarely found being consumed domestically, and kava grown for village use or domestic sale all over the country is not tudei. This domestic market is still much bigger than the foreign export market.
Also, there are few "farms" as such - kava is generally grown over a large area of mainly undeveloped land, interspersed with other crops, often with different kava plants belonging to different people all mixed up, with ownership only known by the people involved. An individual grower may have 1000 5 year old plants, but spread over several kilometers of bush track way up in the hills away from the coastal roads. Only more recently (2000+) commercial planting resembling more of a farm has become more prevalent, particularly on Pentecost & Santo.