The Global History of Tea

Every day, humanity drinks well over two billion cups of tea. It is often described as the most consumed beverage in the world after water — ahead of coffee, ahead of soft drinks, ahead of everything else we deliberately prepare. Yet all of it, from the palest silver-needle white tea to the darkest fermented pu-erh, comes from the leaves of a single species of evergreen shrub: Camellia sinensis. The history of tea is the history of how that one plant travelled from a corner of Asia into almost every culture on the planet, changing economies, etiquette and even the outcomes of wars along the way.

A leaf from the borderlands

The tea plant is native to the region where southwestern China, northeastern India and northern Myanmar meet — a wet, subtropical belt of hills where wild tea trees still grow. Botanists recognise two principal varieties: Camellia sinensis var. sinensis, the small-leaved Chinese type suited to cooler, higher ground, and Camellia sinensis var. assamica, the large-leaved type of Assam and Yunnan that thrives in hot, humid lowlands. Almost every tea you have ever tasted comes from one of these two varieties or their crosses.

Chinese tradition credits the discovery of tea to the legendary emperor and herbalist Shennong, said to have lived nearly five thousand years ago, when leaves from a wild tree drifted into his pot of boiling water. It is a founding myth rather than history — Shennong is a mythological figure — but the legend records something true: tea began in China, and it began as medicine. Early Chinese texts treat tea as a bitter herbal remedy, chewed or boiled, long before anyone thought of it as a pleasure.

The earliest physical evidence is remarkable enough without legend. In 2016, scientists reported that plant remains buried with the Jing Emperor of the Western Han dynasty — who died in 141 BCE — were in fact tea, making the leaves in his tomb near modern Xi'an the oldest tea yet discovered. By the Han period, then, tea was already precious enough to accompany an emperor into the afterlife.

Tea becomes an art: Tang and Song China

Tea drinking spread gradually along rivers and monastic networks, and by the Tang dynasty (618–907 CE) it had become a national habit, cultivated widely and taxed by the state. It was in this world that a scholar named Lu Yu wrote the Cha Jing, or Classic of Tea, around 760 CE — the first book ever devoted to tea. Lu Yu described the plant, the tools, the water, the fire and the manner of brewing with such care that he elevated tea from refreshment to discipline. In Tang fashion, tea leaves were steamed, pressed into cakes, then roasted, ground and whisked or boiled into a broth, sometimes seasoned with salt.

Under the Song dynasty (960–1279), tea culture grew still more refined. Powdered tea whisked into a froth became the height of sophistication, and competitive tea contests judged the whiteness of the foam against dark-glazed bowls. This whisked, powdered style would soon cross the sea and take root — permanently — in Japan.

Japan: from temple medicine to the way of tea

Buddhist monks studying in Tang China carried tea seeds home to Japan as early as the beginning of the ninth century. But the decisive figure was the monk Eisai, founder of Rinzai Zen, who returned from Song China in 1191 with seeds and with the whisked-powder method of preparation. His treatise Kissa Yōjōki ("Drinking Tea for Health"), completed in 1211, praised tea as a medicine for long life and helped fix the drink in Japanese monastic and samurai culture.

Over the following centuries, Japan transformed the Song powdered style — which China itself later abandoned — into something entirely its own: chanoyu, the tea ceremony. Its most influential master, Sen no Rikyū (1522–1591), stripped the gathering down to an aesthetic of rustic simplicity, small rooms and humble utensils, in which preparing and sharing a bowl of whisked matcha became a meditation on attention and impermanence. Matcha survives today as a living fossil of medieval Chinese tea practice — preserved, perfected and made famous by Japan.

The Ming revolution: how steeped tea won

The way most of the world now makes tea — loose dried leaves steeped in hot water — is a Ming dynasty invention. In 1391 the Hongwu Emperor, founder of the Ming, abolished the costly tribute of compressed tea cakes and required loose-leaf tea instead. Brewing changed with the leaf: infusion in pots and lidded cups replaced whisking and boiling. Teaware as we know it — the teapot above all — flourished in this era, most famously the unglazed purple-clay pots of Yixing. It was Ming-style steeped tea, not Tang cakes or Song powder, that foreign traders would first encounter and carry across the oceans.

Tea goes to sea

Portuguese traders and missionaries reaching China in the sixteenth century were among the first Europeans to describe tea, but it was the Dutch who first shipped it commercially to Europe, in the early seventeenth century — the first recorded consignments arriving in Amsterdam around 1610. For decades tea remained an exotic, costly curiosity sold through apothecaries and coffee houses.

England's conversion came with a wedding. When the Portuguese princess Catherine of Braganza married King Charles II in 1662, she brought with her a personal habit of tea drinking, and the court followed the queen. What began as aristocratic fashion spread outward through London's coffee houses — Thomas Garway was advertising tea to the public in the late 1650s — and then into homes. The English East India Company, granted a monopoly on the China trade, turned tea from luxury to staple: by the eighteenth century tea had become Britain's defining domestic drink, sweetened with sugar from Caribbean plantations, a pairing with its own dark history in the slave economy that produced that sugar.

Tea's price bred crime and politics alike. Heavy British duties created a vast smuggling economy — by some estimates much of the tea drunk in eighteenth-century Britain was contraband — until the Commutation Act of 1784 slashed the tax and collapsed the smugglers' market overnight. Across the Atlantic, tea became a symbol of imperial overreach: in December 1773, American colonists protesting the Tea Act boarded East India Company ships in Boston harbour and threw 342 chests of tea into the sea. The "Boston Tea Party" pushed Britain and its American colonies down the road to revolution — and helped tilt American taste towards coffee for generations.

Empire, opium and the theft of a plant

By the early nineteenth century Britain had a serious balance-of-payments problem: it bought enormous quantities of Chinese tea, but China wanted little in return except silver. The East India Company's infamous solution was opium, grown in British India and smuggled into China against Chinese law. When Chinese authorities moved to stamp out the trade, Britain went to war. The First Opium War (1839–1842) ended with the Treaty of Nanjing, forced open Chinese ports and ceded Hong Kong — a conflict whose causes were entangled, ultimately, with the British national thirst for tea.

At the same time, Britain set out to break China's monopoly by growing tea inside its own empire. Two threads came together in India. First, tea was found already growing wild in Assam: the Singpho people had long used the native assamica plant, and from the 1820s onwards Robert Bruce and his brother Charles brought it to British attention; the first Assam-grown tea was sold in London in 1839. Second, the East India Company sent the Scottish botanist Robert Fortune into China in 1848, disguised in Chinese dress, to collect tea plants, seeds and — crucially — skilled Chinese tea makers, all delivered to the Himalayan foothills. From these ventures grew the great plantation industries of Assam and Darjeeling, and later, after a leaf blight destroyed Ceylon's coffee estates in the 1870s and 1880s, the tea gardens of Sri Lanka, whose first commercial planting had been made by James Taylor at Loolecondera estate in 1867.

The plantation system produced tea on a scale the world had never seen — and it did so with indentured and desperately poor labour, a legacy that still shapes debates about wages and conditions on tea estates today. Honest tea history includes the cup's human cost.

Clippers, tea bags and iced tea

The nineteenth century romanticised tea even as it industrialised it. Sleek "clipper" sailing ships raced each new season's tea from China to London — the great race of 1866 saw rivals docking within hours of each other after a hundred days at sea — until the opening of the Suez Canal in 1869, the very year the famous clipper Cutty Sark was launched, handed the trade to steamships and made the racers obsolete almost overnight.

The twentieth century changed how tea was made and served. The tea bag emerged in the United States — patents for tea-leaf holders date to the start of the century, and legend credits New York merchant Thomas Sullivan's silk sample pouches of around 1908 with popularising the idea. Iced tea, long known in America, was famously propelled into the mainstream at the 1904 World's Fair in St Louis; it now accounts for the overwhelming majority of tea drunk in the United States. In the 1930s, the invention of CTC processing ("crush, tear, curl") in Assam produced the small, quick-brewing granules that made strong, cheap, milky tea an everyday drink for millions — nowhere more consequentially than in India itself.

Chai: tea comes home to India

It is easy to forget how recent India's love affair with drinking tea is. Through the nineteenth century, Indian-grown tea overwhelmingly left the country for London auction rooms. Only in the early twentieth century, as producers began marketing within India and railway platforms filled with tea vendors, did the drink take popular root — and India made it its own. Brewed strong with milk, sugar and often ginger or cardamom, masala chai became the daily rhythm of Indian life, poured by chaiwalas from Kashmir to Kanyakumari. India is today one of the world's largest producers of tea and drinks most of what it grows — a complete reversal of the colonial pattern.

The world in a cup

Look across the planet today and tea tells local stories everywhere. Britain still takes its black tea with milk; Morocco pours green tea with mint and sugar from a height; Tibet churns tea with butter and salt; Russia brews dark concentrate from the samovar; Japan whisks matcha and steams sencha; Taiwan invented bubble tea in the 1980s and sent it around the world; the American South sweetens iced tea by the pitcher. China, where it all began, remains the largest producer and consumes more tea than any other nation, while Kenya — a tea country only since the early twentieth century — has become one of the world's great exporters.

Five thousand years of legend, twelve hundred years of literature, and one species of leaf. However you take your cup — steeped, whisked, spiced, iced — you are drinking the result of one of the longest continuous conversations between a plant and a civilisation. Every drink has a story; tea's is simply longer than most.

Where to go next

New to tea? Start with the main types of tea and how to brew each one well. Curious about what counts as "real" tea? Read Tea vs Herbal Infusion. Or go straight to the glass with our profiles of green tea, black tea, masala chai and matcha.