We visited the Smulhoeve in Leidschenveen but there are many more cafes scattered around the country (Alphen aan de Rijn, Nootdorp and Brielle among others).
They also do pottery and painting workshops and they produce honey, which was voted the best in The Hague in 2014.
Next on my to do list is a visit to Choco Toko, the chocolate lab they have in Zoetermeer, which sounds very promising....
Here's today's cafe:
List of all cafes and other activities available here: http://www.ipsedebruggen.nl/Ontmoet-ons/Winkels-horeca/1902,,,,,,,,/