When you have memorized this glossary, it will be time for you to take the written test and take the examination of blind tasting to become a Master of Wine. In effect, it is the most famous and most coveted professional qualification in the frame of the wine trade. It is really a prestigious title: only 200 people or so were appointed Masters of Wine. The examination lasts a week and is carried out by the Institute of Master of Wine in London. Wine professionals who deserved the title often add the MW credentials after their name.