Koyt Jopen -Jopen Koyt is a gruitbeer (herb beer) that is brewed according to the bierkeur (city recipe) from 1407. The beer is brewed with malted barley, malted wheat and oats and has a malty taste with a smooth herbal finish. The aroma has a hint of herbs and spices mixed with dark malt. Jopen Koyt is the only gruitbeer from the Netherlands. Gold medal winner at the European Beerstar competition in 2009 and a silver medal at the European Beerstar Competition in 2011.