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The brick tea is packaged [in Kangting] either in the courtyard or in the street outside, and it is quite a complicated process. When the coolies bring it in from Ya'an, it has to be repacked before being consigned upcountry, for in a coolie's load the standard subunit is four bricks lashed together, and these would be the wrong shape for animal transport. So they are first cut in two, then put together in lots of three, leaving what they call a gam, which is half a yak's load. Tea which is going to be consumed reasonably soon is done up in a loose case of matting, but the gams, which are bound for remote destinations, perhaps even for Lhasa, are sewn up in yakhides. These hides are not tanned but are merely dried in the sun; when used for packing they are soaked in water to make them pliable and then sewn very tightly around the load, and when they dry out again the tea is enclosed in a container which is as hard as wood and is completely unaffected by rain, hard knocks, or immersion in streams. The Tibetan packers are a special guild of craftsmen, readily identifiable by the powerful aroma of untanned leather which they exude.
Another prominent guild in Kangting is that of the women tea coolies who shift the stuff from the warehouses to the inns where the caravans start. They have a monopoly on this work and the cheerful gangs of girls are a picturesque element in the city's life. They need to be immensely strong to do a job which consists of carrying over a short distance anything up to an entire yak's load several times a day. Many of them are quite pretty (and well aware of the fact); they look very gay and rather brazen as, giggling and chattering among themselves, they move along with their heavy burdens, which are held in place by a woolen girdle around the chest.
Tea bricks are used as a form of food in parts of Central Asia and Tibet in the past as much as in modern times. In Tibet pieces of tea are broken from tea bricks, and boiled overnight in water, sometimes with salt. The resulting concentrated tea infusion is then mixed with butter, cream or milk and a little salt to make butter tea, a staple of Tibetan cuisine. 
The tea mixed with tsampa is called Pah. Individual portions of the mixture are kneaded in a small bowl, formed into balls and eaten. Some cities of the Fukui prefecture in Japan have food similar to tsampa, where concentrated tea is mixed with grain flour. However, the tea may or may not be made of tea bricks.
In parts of Mongolia and central Asia, a mixture of ground tea bricks, grain flours and boiling water is eaten directly. It has been suggested that tea eaten whole provides needed roughagenormally lacking in the diet.
Due to the high value of tea in many parts of Asia, tea bricks were used as a form of currency throughout China, Tibet, Mongolia, and Central Asia. This is quite similar to the use of salt bricks as currency in parts of Africa. Tea bricks were in fact the preferred form of currency over metallic coins for the nomads of Mongolia and Siberia. The tea could not only be used as money and eaten as food in times of hunger but also brewed as allegedly beneficial medicine for treating coughs and colds. Up until World War II, tea bricks were still used as a form of edible currency in Siberia.
Tea bricks for Tibet were mainly produced in the area of Ya'an (formerly Yachou-fu) in Sichuan province. The bricks were produced in five different qualities and valued accordingly. The kind of brick which was most commonly used as currency in the late 19th and early 20th century was that of the third quality which the Tibetans called "brgyad pa" ("eighth"), because at one time it was worth eight Tibetan tangkas (standard silver coin of Tibet which weighs about 5.4 grams) in Lhasa. Bricks of this standard were also exported by Tibet to Bhutan and Ladakh.