A History of the World in 6 Glasses

by Tom Standage

The establishments that sprung up to serve coffee had a markedly different character from taverns that sold alcoholic drinks, and became centers of commercial, political, and intellectual exchange.

Coffee promoted clarity of thought, making it the ideal drink for scientists, businessmen, and philosophers. Coffeehouse discussions led to the establishment of scientific societies, the founding of newspapers, the establishment of financial institutions, and provided fertile ground for revolutionary thought, particularly in France.

in Britain, coffee was challenged by tea imported from China. Its popularity in Europe helped to open lucrative trade routes with the East and underpinned imperialism and industrialization on an unprecedented scale, enabling Britain to become the first global superpower. Once tea had established itself as Britain's national drink, the desire to maintain the tea supply had far-reaching effects on British foreign policy, contributing to the independence of the United States...

There are several romantic stories of its discovery. One tells of an Ethiopian goatherd who noticed that his flock became particularly frisky after consuming the brownish purple cherries from a particular tree. He then tried eating them himself, noted their stimulating powers, and passed his discovery on to a local imam. The imam, in turn, devised a new way to prepare the berries, drying them and then boiling them in water to produce a hot drink, which he used to keep himself awake during overnight religious ceremonies.