Jamaican Blue Mountain Coffee or Jamaica Blue Mountain Coffee is a classification of coffee grown in the Blue Mountains of Jamaica. The best lots of Blue Mountain coffee are noted for their mild flavour and lack of bitterness. Over the past few decades, this coffee has developed a reputation that has made it one of the most expensive and sought-after coffees in the world. Over 80% of all Jamaican Blue Mountain Coffee is exported to Japan. In addition to its use for brewed coffee, the beans are the flavor base of Tia Maria coffee liqueur.