Meet John Zhu; The Chinese man that's been tasting water professionally since 2008

John Zhu is a pioneer in the niche industry of water tasting. professionally they are called ‘water sommeliers’ and their job is to taste water. John is one of just a handful of water sommeliers in China who has made a profession out of tasting water and offering his expertise to hotels and restaurants across Asia.
He samples naturally carbonated water imported from Slovenia.
Although water might seem like a nondescript beverage, Zhu says different minerals give each variation its own unique characteristics.