Douchi

Douchi (豆豉)
A close-up of douchi
Alternative namesFermented black soybeans, Chinese fermented black beans, salted black beans, salty black beans
Place of originChinese
Main ingredientsFermented soybean
Douchi
"Douchi" in Chinese characters
Chinese豆豉
Hanyu Pinyindòuchǐ
Jyutpingdau6-si6
Transcriptions
Standard Mandarin
Hanyu Pinyindòuchǐ
IPA[tôʊ.ʈʂʰɨ̀]
Yue: Cantonese
Yale Romanizationdauh-sih
Jyutpingdau6-si6
IPA[tɐw˨.si˨]
Southern Min
Hokkien POJtāu-sīⁿ

Douchi[a] is a type of fermented and salted black soybean most popular in the cuisine of China, where they are most widely used for making black bean sauce dishes.[1][page needed]

Douchi is made by fermenting and salting black soybeans using same ferments used for Miso which is Koji called Qu which is the Chinese equivalent(Chinese: ; pinyin: ) making but may involve different strains. Douchi can be classifified as Aspergillus-type Douchi, Mucor-type Douchi, Bacterial-type Douchi, or Rhizopus-type Douchi, It involves two stages mainly, Koji-making , a preferment stage and a maturation stage, also called post fermentation stage were its mixed with other ingredients like brine and allowed to age .[2]The black type soybean is most commonly used and the process turns the beans soft, and mostly semi-dry (if the beans are allowed to dry). Regular soybeans (white soybeans) are also used, but this does not produce "salted black beans"; instead, these beans become brown. The smell is sharp, pungent, and spicy; the taste is salty, somewhat bitter and sweet. [citation needed] The product made with white soybeans is called mianchi.

Douchi, "Chinese salted black beans", and "black soybeans" are not the same as the black turtle bean, a variety of common bean that is commonly used in the cuisines of Central America, South America, and the Caribbean.


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  1. ^ Shurtleff, W.; Aoyagi, A History of Fermented Black Soybeans (165 B.C. to 2011). Lafayette, California: Soyinfo Center, 2011
  2. ^ "Douchi - an overview | ScienceDirect Topics". www.sciencedirect.com. Retrieved 2025-02-04.

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