A. Brief History of Tea How the world's most widely consumed beverage shaped empires, economies, and cultures across six centuries of global trade A Tea is, after water, the most consumed beverage in the world. Approximately three billion cups are drunk daily across more than one hundred and sixty countries, from the lightly oxidised green teas of Japan and China to the robust black teas of India, Sri Lanka, and East Africa and the fermented pu-erh teas of Yunnan province. All of these are made from the leaves of a single plant species, Camellia sinensis, whose cultivation and processing have generated enormous economic and cultural complexity over more than a millennium of use. The diversity of tea flavours, colours, and cultural rituals associated with its consumption makes it unique among agricultural commodities.
B. The earliest credible accounts of tea drinking come from China, where tea is mentioned in texts dating from the Tang dynasty (618–907 CE). The Tang dynasty scholar Lu Yu wrote the first known comprehensive text on tea — the Cha Jing, or Classic of Tea — around 760 CE, documenting the cultivation, processing, and preparation of tea in a form that elevated its consumption from a simple dietary practice to an aesthetic and philosophical discipline. The spread of Buddhism across East Asia carried tea culture with it: Buddhist monasteries used tea to support meditation practice, and the tea ceremony that developed in Japan between the twelfth and sixteenth centuries grew directly from Buddhist contemplative traditions imported from China.
C. Tea reached Europe through Portuguese and Dutch trading contacts with China in the early seventeenth century and rapidly became fashionable among European elites. The Dutch East India Company was the primary vehicle for early European tea importation, and the beverage quickly became the dominant hot drink in the Netherlands and in Britain, where it displaced coffee among the upper classes within a generation of its introduction. The scale of the tea trade between China and Europe — conducted initially through a complex system of licensed Chinese merchants operating through the port of Canton — was enormous: by the mid-eighteenth century, the English East India Company was importing millions of pounds of tea annually.
D. The British taste for tea had profound geopolitical consequences. Britain's desire to balance its massive tea import bill — which was depleting national silver reserves — drove the decision to promote opium production in Bengal and force its import into China, initiating the sequence of events that led to the First Opium War of 1839–42. The taxation of tea imports to America's colonies contributed to the political tensions that preceded the American Revolution: the Boston Tea Party of 1773, in which American colonists dumped a cargo of East India Company tea into Boston harbour in protest at taxation without representation, became one of the most potent symbolic acts in the lead-up to independence.
E. The British response to China's monopoly on tea production was to establish tea cultivation in its own colonial territories. Following the discovery of native tea plants in Assam in 1823, and the subsequent clandestine importation of Chinese tea plants and processing knowledge — a mission carried out by the botanist Robert Fortune in the 1840s — large-scale tea cultivation was established in Assam, Darjeeling, and what is now Sri Lanka. These colonial tea industries reshaped entire landscapes, displacing existing forest and subsistence agriculture, and created economies of scale that made Indian and Sri Lankan teas price-competitive with Chinese tea in British and global markets by the 1870s.
F. The cultural dimensions of tea consumption are as varied as the drink's flavours. The Japanese tea ceremony — chado or 'the way of tea' — is a formalised aesthetic practice that transforms the making and sharing of a bowl of powdered green tea into an occasion for meditative attention, aesthetic appreciation, and social harmony. British afternoon tea, by contrast, is an informal social ritual associated with leisure, hospitality, and national identity — a practice whose origins in the aristocratic habits of the nineteenth century have been thoroughly democratised in the century since. In Central Asia and the Middle East, tea drinking is inseparable from hospitality customs whose violation carries social significance.
G. The economic geography of tea production continues to evolve. China and India remain the world's two largest producers and are also the largest domestic consumers. Kenya has become the world's largest exporter of black tea — a development of the twentieth century driven by British colonial investment and the particular suitability of the Kenyan highlands for tea cultivation. The specialty tea market — paralleling the specialty coffee movement — has seen growing consumer interest in single-origin, artisanally processed teas and in the health benefits of varieties such as white tea and oolong that were previously little known outside their regions of origin.