''Kinema'' () is a fermented soybean food, prepared by the Kirati communities of the Eastern Himalayas region: Eastern Nepal, and

Darjeeling Darjeeling (, , ) is a city in the northernmost region of the States and union territories of India, Indian state of West Bengal. Located in the Eastern Himalayas, it has an average elevation of . To the west of Darjeeling lies the Koshi Pr ...

, Kalimpong and

Sikkim Sikkim ( ; ) is a States and union territories of India, state in northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Koshi Province of Nepal in the west, and West Bengal in the ...

regions of

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

. Kinema also known as Kinama, which is a traditional food of the Limbu people.

History

The word ''kinema'' is believed to be derived from the Limbu language ''kinama'', where ''ki'' means fermented and ''nama'' means to smell. It is a traditional food of the Kirati people. According to microbiologist Jyoti Prakash Tamang, kinema is estimated to have originated around 600 BC to 100 AD during Kirat dynasty rule, introduced by Limbu people.

Production

The first step of kinema production is soaking soybeans overnight. The soaked beans are boiled until soft (2–3 hours). Water is drained off and beans are lightly cracked with a mortar. 1% of firewood ash is added and mixed thoroughly. The grits are put in a bamboo bucket lined with local fern ('' Glaphylopteriolopsis erubescens''). The bucket is then covered with a jute bag and left to ferment naturally at ambient temperatures for 1–3 days. No bacterial culture is intentionally added to kinema. The successful fermentation relies on natural bacteria, mainly ''

Bacillus subtilis ''Bacillus subtilis'' (), known also as the hay bacillus or grass bacillus, is a gram-positive, catalase-positive bacterium, found in soil and the gastrointestinal tract of ruminants, humans and marine sponges. As a member of the genus ''Bacill ...

''.

Consumption

The slimy, odorous product of

fermentation Fermentation is a type of anaerobic metabolism which harnesses the redox potential of the reactants to make adenosine triphosphate (ATP) and organic end products. Organic molecules, such as glucose or other sugars, are catabolized and reduce ...

is traditionally prepared into a soup that is consumed with rice, but can also be turned into a savoury dip or a pungent side dish to be consumed along with rice or bread. Kinema is traditionally prepared at home, but now it is sold in local markets and even retailed online as a dried product.

Nutritional value

''Kinema'' is considered a healthy food because fermentation breaks down complex proteins into easily digestible

amino acid Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. Although over 500 amino acids exist in nature, by far the most important are the 22 α-amino acids incorporated into proteins. Only these 22 a ...

s. The product is alkaline with pH of 7.89, unlike soyabean which has a pH of 6.75. It has 62% moisture content. 48 g of protein, 28 g of carbohydrate, 17 g of fat and 7 g of ash is found in every 100 g of dry kinema. The energy value of ''Kinema'' is 2 MJ per 100 grams. Free fatty acidity in kinema is found to be about 33 times higher than raw soybeans.

Similar foods

Many other Asian countries have ''Bacillus''-fermented soyabean dishes, such as ''shuǐdòuchǐ'' of

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

, '' cheonggukjang'' of

Korea Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically Division of Korea, divided at or near the 38th parallel north, 3 ...

nattō is a traditional Japanese cuisine, Japanese food made from whole soybeans that have been Fermentation in food processing, fermented with Bacillus subtilis, ''Bacillus subtilis'' var. ''natto''. It is often served as a breakfast food with rice. ...

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

, '' thua nao'' of

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

, '' tungrymbai'' of

Meghalaya Meghalaya (; "the abode of clouds") is a states and union territories of India, state in northeast India. Its capital is Shillong. Meghalaya was formed on 21 January 1972 by carving out two districts from the Assam: the United Khasi Hills an ...

, ''hawaijaar'' of

Manipur Manipur () is a state in northeastern India with Imphal as its capital. It borders the Indian states of Assam to the west, Mizoram to the south, and Nagaland to the north and shares the international border with Myanmar, specifically t ...

, ''bekangum'' of Mizoram, '' akhuni'' of

Nagaland Nagaland () is a States and union territories of India, state in the northeast India, north-eastern region of India. It is bordered by the Indian states of Arunachal Pradesh to the north, Assam to the west, Manipur to the south, and the Naga Sel ...

, and ''piak'' of

Arunachal Pradesh Arunachal Pradesh (; ) is a States and union territories of India, state in northeast India. It was formed from the North-East Frontier Agency (NEFA) region, and India declared it as a state on 20 February 1987. Itanagar is its capital and la ...

. Kinema forms one of the vertices of the "natto triangle" proposed by the Japanese ethnobiologist Sasuke Nakao. Jyoti Prakash Tamang proposed a extended ‘KNT (Kinema-Natto-Thua Nao) triangle', connecting the fermented soyabeans across

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

. Nakao hypothesized Yunnan region of China to be the origin place of fermented soyabean technique, as the center of the triangle falls in that region. Jyoti Prakash Tamang shows evidence that fermented soybean styles in India all derive from kinema.

References