Chinese Tea 中国茶

One plant, six families

Every true tea — green, white, yellow, oolong, black, and dark (pu-erh's family) — is the same leaf, Camellia sinensis; the six families differ only in what happens after picking, chiefly how far the leaf is allowed to oxidize^[1]. Green is fixed fresh; white barely touched; oolong stopped partway; black taken all the way; pu-erh fermented onward for years. "Herbal teas" — chrysanthemum, goji — are honored guests from the cabinet, not members of the family.

What the research honestly says

Tea is one of the most-studied beverages on Earth and still resists tidy claims. The NIH's summary for green tea is representative: modest effects on LDL cholesterol from extracts, a possible small effect on body weight, and no proven disease-prevention claims^[1]. The population studies linking tea-drinking cultures to good outcomes can't untangle the tea from the rest of the life it's drunk in. The honest sentence: a daily pot is a pleasure with plausible small benefits and essentially no downside at food strength — which is more than most things in a mug can say.

The one real warning

It concerns pills, not pots: concentrated green tea extracts in capsules have caused liver injury in susceptible people (a gene variant carried by 5–15% of Americans), and supplements can interact with several medications^[1]. The leaf brewed in water has no such record. In this teahouse, tea is a beverage, not a supplement.

Choosing your pot

Caffeine rises roughly with oxidation and leaf grade; afternoon drinkers drift toward greens and whites, evening drinkers toward the caffeine-free brews. Beyond that, the tradition's advice is disarmingly simple: the best tea is the one that makes you sit down for ten minutes. The gongfu method is that advice turned into furniture.

Reviewed 2026-08-26