Sheng vs shou pu-erh: raw and ripe, explained

Sheng and shou are the two styles of pu-erh, the compressed tea of Yunnan in southwest China. Sheng, the raw style, is sun-dried leaf pressed into cakes and left to change slowly over years or decades; young, it is bright, vegetal and a little bitter. Shou, the ripe style, is the same leaf fermented on purpose in a warm, damp pile for a few weeks, so it comes out dark, smooth and earthy and is ready to drink the year it is made. The two teas start from the same sun-dried leaf and part ways at one step. In our catalog, Sheng pu-erh brews at 95°C for 3 minutes with 3 g per cup and sits at level 3 of our 0–3 caffeine scale; Shou pu-erh brews at 98°C for 4 minutes with 3 g and sits at level 2.

The same leaf, up to the sun

Both styles begin identically. Large-leaf tea bushes and old trees in Yunnan are picked, the leaves are withered briefly, heated in a wok to stop most of the enzymes, rolled, and then dried in the sun rather than in an oven. That sun-dried loose leaf is called maocha, and it is the raw material of every pu-erh. The wok step is deliberately lighter than in green tea, which is the quiet reason pu-erh can keep changing for decades while a green tea only fades. From the maocha onward, the two roads split.

Sheng: pressed raw and left to age

For sheng, the maocha is steamed for a moment to soften it, pressed into a cake, a brick or a small bowl-shaped tuocha, dried, wrapped in paper and stored. Nothing else happens to it on purpose; time does the rest. A cake a few years old pours pale gold and tastes of grass, flowers and stone fruit, with a bitterness that turns into a returning sweetness in the throat. Ten or twenty years on, the same cake has moved toward honey, dried fruit and wood, which is why our catalog lists aged sheng as its own tea, brewed at 100°C for 3½ minutes with 4 g per cup, one rung lower on the caffeine scale than young sheng. Compressed Yunnan tea once traveled by mule caravan to Tibet along the Tea Horse Road, and the long, humid journey aged it on the way; sheng is the direct descendant of that tea.

Shou: fermented in a pile in weeks

Shou is young as a category. In 1973, factories in Kunming and Menghai worked out how to reproduce the character of decades-old, warehouse-aged sheng in a matter of weeks. The method is called wo dui, or wet piling: maocha is heaped on a factory floor, sprayed with water, covered with cloth and turned for roughly 40 to 60 days while naturally present microbes transform the leaf. The pile is then broken up, dried, sorted and pressed, or sold loose. Menghai's 7572 recipe, set in 1975, is still the reference shou cake, and from the 1980s shou became the everyday tea of Hong Kong dim sum houses, poured through a whole meal because it stays smooth however long it sits in the pot. In the cup it is mahogany to near black, with the earthy, woody, smooth notes our catalog records for it, and almost no bitterness.

How to tell them apart on the shelf

The leaf gives it away before you brew. Sheng leaf is greenish to olive, sometimes with silver tips; shou leaf is dark brown to black, often with golden flecks. A sheng cake smells of hay, flowers or dried apricot; a shou cake smells of damp earth, wood and cocoa, and a freshly made one may carry a faint pile smell that airs out over a few months of rest. The wrapper usually helps too: 生 (sheng) means raw, 熟 (shou) means ripe or cooked, and English labels use those same words. Since December 2008, China's national standard for pu-erh has reserved the name for large-leaf tea grown and processed in Yunnan, and it recognizes exactly these two styles, raw and ripe.

Brewing: one rinse, then short steeps

Both styles are usually brewed from a piece broken off a cake. Pry a lump of about 3 g loose with a knife or a pick, working along the layers rather than across them, and give it a quick rinse with hot water, discarded, to open the compressed leaf. Then follow the catalog numbers: 95°C for 3 minutes for sheng, 98°C for 4 minutes for shou. If young sheng tastes too bitter, shorten the steep and keep the water at 95°C; adding time is what makes it harsh. Shou forgives almost anything, which is why it fills thermoses and office mugs. Both styles re-steep several times, so one measure of leaf covers an afternoon. Our brewing chart has the whole pu-erh family alongside every other type, and the cakes keep for years if you treat them like any other tea: away from light, moisture and strong smells, as our storage guide explains.

Which one to start with

If you have never tried pu-erh, start with shou. It is smooth, it is forgiving at the kettle, and at level 2 on our caffeine ladder our catalog lists it for the early afternoon, the mid-afternoon and after a meal. Young sheng is the more demanding cup, closer in spirit to a strong green tea, and at level 3 our catalog places it in the morning and mid-morning. Aged sheng sits between the two in character and at level 2 in caffeine, listed for the afternoon. One more thing to know: pu-erh is only one branch of China's dark, post-fermented teas. Our catalog also carries three hei-cha, among them Liu Bao from Guangxi, which is aged in bamboo baskets and brews at 95°C for 4 minutes with 4 g. Our China origin page puts all of them next to the country's greens, oolongs and black teas.