Colombia Geisha 018 Coffee (#003)About A Matter Of Concrete: A specialty coffee roastery based in the Van Nelle Factory located in Rotterdam, The Netherlands. The Van Nelle Factory once used to be the biggest coffee roastery in the country, quite rare to find a pre WWII building in Rotterdam, let alone it being a coffee roastery, let alone one that is a listed UNESCO World Heritage monument. Competing in many coffee competitions, founder Rob Clarijs has been on the winners podium of