The Natural History Museum in Oslo and NorBOL participated at the Oslo Science Fair September 23-24, 2016. At our stand we communicated challenges with biological, morphological and genetic species definitions. Fifteen hundered shots of juice were served with the task of identifying which three fruits the juice was composed of. To help them with the task, people received visual DNA barcodes of the fruits as well as a reference library of fruit barcodes. Many learned how DNA barcoding can be used to determine the content of food.