There is aardvark and then there is yster- vark (porcupine). Local craft brewing company Hoogeberg (‘High Mountain’) named one of its lagers Ystervark. (I still have to try it).
The Ystervark is a ‘hybrid lager’, which means it was fermented at the higher temperatures usually used for ales. The time and temperatures used in beer fermentation is not an exact science, and allows brewers to be creative.