||This article is incomplete. (October 2013)|
|Urechis unicinctus at a market in Korea.|
von Drasche, 1881 
Urechis unicinctus (simplified Chinese: 海肠; traditional Chinese: 海腸; pinyin: hǎicháng; Japanese: 螠虫 or ユムシ yumushi; Korean: 개불 gaebul) is a species of marine spoon worm. It is widely referred to as the fat innkeeper worm or the penis fish.
U. unicinctus, like other Urechis, lives in burrows in sand and mud. It gets the name "fat innkeeper worm" because the tunnels it creates often contain other animals.
In Chinese cuisine the worm is stir-fried with vegetables, or dried and powdered to be used as an umami enhancer. In particular, the worm is considered an important ingredient in Shandong cuisine and is used in numerous recipes.
It is also used for fishing bait.
Urechis unicinctus served as hoe in a restaurant in Korea.
- van der Land, Jacob; Murina, Galina Vansetti (2012). "Urechis unicinctus (von Drasche, 1881)". World Register of Marine Species. Retrieved 2012-11-12.
- Choi, S.D. et al. (1998) "Studies on the commercial scale production of Urechis unicinctus (von Drasche) in southern Korea" Bulletin of Yosu National University. (in Korean with English abstract)
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