According to the Scottish whisky regulations of 2009, there are five categories that define what a Scotch whisky is;  single malt Scotch whisky, single grain Scotch whisky, blended malt Scotch whisky (formerly called "vatted malt" or "pure malt"), blended grain Scotch whisky, and blended Scotch whisky. Whether you are a connoisseur, casual Scotch whisky drinker or a first-timer, these definitions have been designed to help you understand Scotch Whisky.