The Dampkring is specialized in several kinds of grass. Even a microscope is at the bar so you can check the stuff from very close by. Good quality. Very helpful personnel, they know a lot about the merchandise...
This is also the shop where there were shooting he scene from Oceans12. Have a coke and a smile and feel like Brad Pitt. You can find this shop when you walk from Damsquare to the Leidseplein. Follow shoppingstreet Kalverstraat, and turn left at the Heiligeweg. From Leidseplein: continue walking straight ahead through the Leidsestraat, after Koningsplein you are at the Heiligeweg
address: Handboogstraat 29 Amsterdam