The most ordinary beverage on earth — about two billion cups a day — is also one of the most consequential. Tea is one species, Camellia sinensis, processed in radically different ways to produce six recognized categories of finished product. It is also a commodity that, for three centuries, deformed the foreign policies of every European empire that traded in it; an aesthetic object that has been the focus of two of Asia's most refined ritual practices; and a domesticated plant that, left alone, wants to be a tree.
The six essays in this pillar move outward from the plant. Begin with the species itself and the genetics that surprised researchers. Move to the processing chemistry that distinguishes the six tea categories. Walk through the imperial trade story — how a Chinese beverage became a British addiction, the addiction became the opium trade, the trade became a war, the war ended with horticultural espionage and the rise of Indian tea. Then turn to the practices: gongfu cha in southern China, the Yixing clay teapots whose mineralogy makes them irreplaceable, and the Japanese tea ceremony in which the tea is almost beside the point.
Read this pillar in order if you want a coherent arc from botany to ritual. Each essay also stands alone.
Camellia Sinensis
Every cup of tea on earth comes from one species — one species with two varieties, a few thousand named cultivars, and a still-unsettled origin story.
How Processing Makes Six Teas
One leaf, six categories. The differences between green, white, yellow, oolong, black, and pu-erh tea are entirely about what you do — and don't do — to the leaf in the hours after picking.
Tea & Empire
How a Chinese beverage became a British addiction, the addiction became a trade deficit, the deficit became the opium trade, and the trade became a war that rewrote the political map of Asia.
Gongfu Cha
A Chinese way of preparing tea where the goal is not the cup but the attention you bring to it.
Yixing Clay
An iron-rich purple clay from one Chinese township that became the only material serious tea drinkers will use for a teapot.
Japanese Tea Ceremony
A practice that calls itself "the way of tea" and is, on close inspection, almost entirely about everything except the tea.