The history of tofu

History: 

              In Asia   

Tofu originated in ancient China, although little else is known about the exact historic origins of tofu and of its method of production.The theory that tofu was invented by Lord Liu An of Huainan in about 164 BCE (early Han dynasty) has steadily lost favor among most scholars in China and abroad since the 1970s. The claim concerning Liu An was first made by Zhu Xi during the Song dynasty (960-1127 CE) - roughly 1,000 years after the supposed invention.The theory that tofu-making is shown in a mural incised on a stone slab in Han Tomb No. 1, at Da-hu-ting, Mixian, Henan province attracted much attention after about 1990. Yet it too has lost favor because (1) no step of cooking the soy puree is shown in the mural, and (2) when Chinese food historians tried to make tofu without cooking the puree, the result was a tiny amount of unpalatable material.Thus, while there are many theories regarding tofu's origins, historical information is scarce enough as to relegate the status of most theories to either speculation or legend. Like the origins of cheese and butter, the exact origin of tofu production may never be known or proven. The historical era starts in the year 965 CE (early Song dynasty) with the Qing Yilu by Tao Ku.What is known is that tofu production is an ancient technique. Tofu was widely consumed in ancient China,^{[citation needed]} and techniques for its production and preparation were eventually spread to many other parts of Asia.Its development likely preceded Liu An, as tofu is known to have been a commonly produced and consumed food item in China by the 2nd century BC. Although the varieties of tofu produced in ancient times may not have been identical to those of today, descriptions from writings and poetry of the Song and Yuan Dynasty show that the production technique for tofu had already been standardized by then, to the extent that they would be similar to tofu of contemporary times.In China, tofu is traditionally used as a food offering when visiting the graves of deceased relatives. It is claimed that the spirits (or ghosts) have long lost their chins and jaws, and that only tofu is soft enough for them to eat. Before refrigeration was available in China, tofu was often only sold during the winter time, due to the tofu not spoiling in the colder weather. During the warmer months, any leftover tofu would be spoiled if left for more than a day. Chinese war hero Guan Yu used to be a tofu maker before he enlisted in the army. Chinese martial arts expert and hero, Yim Wing-chun, was a celebrated tofu maker in her village. (Tofu as such plays a part in the 1994 movie about her life, Wing Chun.)Tofu and its production technique were subsequently introduced into Korea and then Japan in the Nara period (late 8th century) as well as other parts of East Asia. The earliest document of tofu in Japan shows that the dish was served as an offering at the Kasuga Shrine in Nara in 1183. The book Tofu Hyakuchin (豆腐百珍 Dòufu Bǎizhēn), published in the Edo period, lists 100 recipes for cooking tofu.The rise in acceptance of tofu likely coincided with that of Buddhism as it is an important source of proteins in the religion's vegetarian diet. Since then, tofu has become a staple in many countries, including Vietnam, Thailand, and Korea, with subtle regional variations in production methods, texture, flavor, and usage.In Southeast Asia, tofu was introduced to the region by Chinese immigrants from sea-faring Fujian province, evident from the fact that many countries in Southeast Asia refer to tofu by the Min Nan Chinese pronunciations for either soft and firm tofu, or "tāu-hū" and "tāu-goan" respectively. In Indonesia, Malaysia, Singapore, Thailand and the Philippines, tofu is widely available and used in many local dishes. Tofu is called tahu in Indonesia, Indonesian dishes such as, tahu sumbat, taoge tahu, asinan, siomay and some curries, are often add slices of tofu as ingredients. In addition, tahu goreng, tahu isi and tahu sumedang are the popular fried tofu snacks. Tofu is called tauhu in Malaysia and Singapore. The Malaysian and Singaporean Indians use tofu in their cuisine such as Indian mee goreng, rojak pasembor. The strait peranakan cuisine often uses tofu, such as mee kari Penang, and laksa. The makers of tofu in these countries were originally the Chinese but tofu now is made by non-Chinese as well. Indonesia, Thailand, Malaysia and the Phillipines are major producers of tofu and have plants located within many municipalities. However, Singapore imports its tofu from its neighboring country, Malaysia.Tofu in the Philippines is essential to the daily diet, as taho, widely eaten as breakfast, or tokwa (a dry fried variation), which is a staple or alternative to meat in main meals, and in numerous regional dishes. Tofu was introduced to the archipelago in the 10th to 13th centuries by Song Chinese mariners and merchants, along with many different foods which had become staples of the Philippine diet. The use and production of Tofu were first limited to urban centers with influential Chinese minorities, such as Cebu or Tondo, but were quickly spread to even remote native villages and islands, long before the Spanish arrival in the 17th century.

In the West 

Polymath Benjamin Franklin was the first American to mention tofu in a 1770 letter to John Bartram. Franklin, who discovered it during a trip to London, included a few soybeans and referred to it as "cheese" from China. The first tofu company in the United States was established in 1878. In 1908 Li Yuying, a Chinese anarchist and a vegetarian with a French degree in agriculture and biology, opened a soy factory, the Usine de la Caséo-Sojaïne, which was the world's first soy dairy and the first factory in France to manufacture and sell beancurd. However tofu was not well known to most Westerners before the middle of the 20th century. With increased cultural contact between the West and East Asia and growing interest in vegetarianism, knowledge of tofu has become widespread. Numerous types of pre-flavored tofu can be found in many supermarket chains throughout the West. It is also used by many vegans and vegetarians as a means to gain protein without consumption of meat products.

Nutrition and health information

Protein 

Tofu is relatively high in protein, about 10.7% for firm tofu and 5.3% for soft "silken" tofu with about 5% and 2% fat respectively as a percentage of weight.In 1995, a report from the University of Kentucky, financed by The Solae Company St. Louis, Missouri (the PTI division of DuPont), concluded that soy protein is correlated with significant decreases in serum cholesterol, Low Density Lipoprotein LDL (bad cholesterol) and triglyceride concentrations.However, High Density Lipoprotein HDL (good cholesterol) did not increase. Soy phytoestrogens (isoflavones: genistein and daidzein) absorbed onto the soy protein were suggested as the agent reducing serum cholesterol levels. On the basis of this research, PTI, in 1998, filed a petition with Food and Drug Administration for a health claim that soy protein may reduce cholesterol and the risk of heart disease.The FDA granted this health claim for soy: "25 grams of soy protein a day, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease." For reference, 100 grams of firm tofu coagulated with calcium sulfate contains 8.19 grams of soy protein. In January 2006, an American Heart Association review (in the journal Circulation) of a decade-long study of soy protein benefits showed only a minimal decrease in cholesterol levels, but it compared favorably against animal protein sources.

 

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