Pu-erh represents one of China's most significant tea productions. Originating from Yunnan province, it has won hearts around the world with its earthy, woody character. Pressed into cakes or tuocha, Yunnan tea can be either raw or ripe. Its journey from ancient tea trees to your teapot is remarkable, and this infusion is also prized for its benefits on cholesterol. A deep dive into the Chinese province of Yunnan, to discover everything about Pu-erh.
What is Pu-erh, the dark tea from Yunnan?
Enjoyed by the Chinese for over a thousand years, Yunnan tea has endured through the ages, offering its distinctive woody and camphor-like flavour. Celebrated, then banned, it ultimately became an iconic production of the Chinese province of Yunnan. Here is the story of this rare and refined drink.
Where does Chinese tea originate?
The exact origins of Yunnan tea remain somewhat uncertain. In a distant era, tea leaves served as a form of currency between Chinese and Tibetan traders, who travelled the ancient "Tea Horse Road". The leaves were pressed into cakes, far easier to carry than loose-leaf tea.
At that time, the only Yunnan tea in existence was green. Experts believe that, under certain climatic conditions, the tea underwent a natural fermentation. The green tea cake darkened, and its flavour transformed entirely.
How did Yunnan's dark tea survive China's imperial dynasties?
Over the centuries, Yunnan tea has known both glory and hardship. Its earliest recorded traces date back to the Tang dynasty, when it was widely appreciated and produced in abundance. Every family in the region would brew this treasure; it became the emblematic drink of the area.
Under the Ming dynasty, however, Yunnan tea nearly disappeared. Banned, it was only produced clandestinely in remote corners of the province, pressed in secrecy and stored in cellars.
How did Yunnan tea become known as "Pu-erh Tea"?
The patience and perseverance of Yunnan's people eventually paid off. Under the Qing dynasty, dark tea entered a new golden age. Compressed tea production resumed with renewed energy. The tea was given a new name, "Pu Ehr tea" or "Pu-erh tea", though its recipe remained unchanged.
Today, enjoyed from a small porcelain teapot or a gaiwan, Yunnan tea in its green (raw) form remains the most consumed in the region. The fermented version is largely exported to Europe and throughout the rest of Asia.
How is Pu-erh, the dark tea, made?
Yunnan tea is crafted following a traditional method. Harvested from wild tea trees, the leaves are processed before being pressed into the iconic cake shape.
Where do Yunnan black tea leaves come from?
Pu-erh tea comes from tea trees growing in the mountain soils of Yunnan. These wild trees yield leaves of exceptional quality. The Camellia sinensis leaves are hand-picked when young but sufficiently developed. They are then compressed into cakes or tuocha, with or without post-fermentation.
What is the journey from leaf to mao cha?
The tea trees dedicated to Pu-erh grow in small garden plots on the mountain slopes of Yunnan. These trees are never treated with chemicals, making the teas entirely organic. Tea production is vital to the region, and the trees, along with the surrounding woodland, are carefully tended by local growers.
When are the tea leaves harvested?
These tea trees are harvested twice a year. The spring harvest is considered the finest, yielding the most prized teas, while the autumn harvest also produces infusions of great quality. Typically, each picking consists of one tea leaf and one bud.
How are the tea leaves processed?
The harvested leaves are spread out on bamboo mats. After withering, they are rolled to encourage post-fermentation, then left to dry in the sun. This step is crucial in the Pu-erh production process: it preserves the intrinsic qualities of the leaves from the tea trees.
At this stage, Yunnan tea is called mao cha. It is green and ready to be pressed into cakes or left to age as loose-leaf. For a dark Pu-erh, this is where the post-fermentation process begins.
How does mao cha become a Pu-erh tea cake?
To produce a traditional Pu-erh cake, the mao cha must weigh exactly 357 grams. The leaves are placed in a cylindrical vessel, then steamed to soften and relax. The mao cha compacts. It is then ready for the next stage.
The tea leaves are transferred into a cloth. The bundle is shaped into a disc and pressed under a stone or another heavy object. The cakes are then moved to drying rooms.
Once dry, the cakes are placed in bamboo baskets and begin their ageing process. This fermentation stage gives them their characteristic flavour and colour.
What are the different types of organic Pu-erh?
Depending on its fermentation method, Chinese Yunnan tea can be described as raw or ripe. Purists refer to these as Pu-erh sheng cha and Pu-erh shu cha.
What is raw Pu-erh?
Raw Pu-erh teas are the green Pu-erh teas. They are sometimes sold under the name Pu-erh sheng cha, or simply raw green sheng. Raw Pu-erh is pressed into cakes or tuocha and then aged in a humid cellar.
What is ripe Pu-erh?
Ripe Pu-erh is a post-fermented tea. These products are sold under the name Pu-erh shu cha. Unlike Pu-erh sheng cha, ripe Pu-erh undergoes an accelerated fermentation process. The tea is moistened with water, covered with a tarpaulin, and left to ferment in a warm, humid room. The resulting Pu-erh tea cakes command a higher price, and the finest crus carry notes of wood and camphor.
How do you recognise a quality Pu-erh?
Like Oolong, Yunnan tea is often imitated but never truly matched. Here are a few pointers to help you assess the quality of a Yunnan tea:
- Even when compressed, the tea should contain whole leaves.
- The leaves should deliver flavour across multiple infusions.
- While Pu-erh has no single fixed taste profile, its aromatic notes should not carry an unpleasant earthy aftertaste.
- The cake or tuocha should be dense and compact.
How to brew a good Pu-erh?
In China, preparing Pu-erh is almost a ritual. Traditionally brewed in a gaiwan, this infusion is equally at home in a porcelain teapot.
Yunnan tea comes in the form of a cake or tuocha. Use a tea pick or a similar tool to loosen the desired amount of leaves; specialists agree this method better preserves the leaves intact. Brew the tea in water heated to 90°C. The leaves will unfurl and release their aromas, and can be used for several consecutive infusions.
Post-fermented Chinese tea is also available loose-leaf. More affordable, it retains the same characteristic quality. A good option if you prefer not to store whole cakes.
What are the benefits of organic Pu-erh?
The way a Pu-erh tea cake is made gives it a unique composition, which is at the heart of its benefits for cholesterol.
What is Chinese black tea made of?
Young tea leaves contain high levels of polyphenols. These gradually diminish during ageing as fermentation encourages the growth of microorganisms. This post-fermentation phase, similar to that of black Oolong tea, is what brings out the cholesterol-lowering properties of the infusion.
What are the health benefits of organic Yunnan tea?
Quality Yunnan teas have a recognised effect on cholesterol. During ageing, the Pu-erh cake is colonised by fungi whose properties are comparable to those of statins. The tea produces an infusion that actively helps reduce cholesterol levels.
This fermented tea is also known for its digestive properties. It is commonly enjoyed after a hearty meal, rather than at the time of the classic "cup of tea".
What are the traditional uses of Pu-erh tea cakes?
In the Canton region of China, Pu-erh is regarded as a medicinal drink. Sold as "Yunnan tea" or "tuocha", it is well known for its cholesterol-reducing properties. In the West, infusions from the mountains of Yunnan are also used as part of weight management routines.
Pu-erh tea has travelled through centuries to reach your cup. Born of traditional cultivation and craftsmanship, it brings unexpected wellness benefits with every brew. Pour a little hot water over the young leaves and let Yunnan tea work its quiet magic.