You can find STET at Westmaas!
Every two years Potato Demonstration Day is organised by Wageningen University & Research, location Westmaas and the Dutch Potato Organisation (NAO).
Potato Demonstration Day is an important meeting place of the potato sector and the event has its focus on the whole of the potato chain. Growers, retail companies, processors and many other potato companies from the Netherlands as well as abroad gather at Potato Demonstration Day to meet and to inform each other about the latest developments in potato business. Potato Demonstration Day is held in Westmaas.
More info at: http://www.aardappeldemodag.nl/en