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Donkey-hide gelatin or ass-hide glue ((ラテン語:colla corii asini)) is gelatin obtained from the skin of the donkey (''equus asinus'') by soaking and stewing. It is used as an ingredient in traditional Chinese medicine, where it is called ejiao (). The gelatin is produced in several coastal provinces of China: Jiangsu, Zhejiang, Shandong. Shandong's Dong'e County was where "ejiao" got its name. According to a ca. 1723 account by the French Jesuits Dominique Parrenin, there was a well in Dong'e which was normally kept closed and sealed, and which was only opened when water was taken to be used in preparation of ''ejiao'' for the emperor's court.〔 (This is a reprint; the original text was published in the first half of the 18th century. ''E xian'' (for Dong'e) and ''Ejiao'' are transcribed ''Ngo-hien'' and ''Ngo-kiao'', under the transcription system then in use).〕 ==Manufacture== According to Parennin, the product was traditionally prepared during the late fall and winter (from after the harvest and until the beginning of March). It was supposed to be made from the skin of a recently killed well-nourished black donkey.〔 Since the supply of this material was rather limited, it was said that a large amount of "fake" ejiao was also manufactured, using skins from mules, horses, camels, pigs, and sometimes, it was said, even from old shoes; a bit of "real stuff" was added to it, to deceive consumers.〔 Ejiao is either prepared as dry gelatin or mixed with powdered oyster shell or pollen to form glue balls. It tastes sweet.〔 Jesuits noted that while the "real" ''ejiao'' has no disagreeable taste or smell, the fake product could be distinguished by its unpleasant smell and taste, even when it was made from pig skins (which, supposedly, provided the best approximation of the real thing).〔 In the 21st century, ejiao manufacturers experience problems with the supply of genuine donkey skins, as fewer people raise these animals these days. To ensure the survival of this traditional product, Qin Yufeng, the chairman of Dong’e Ejiao Co (a major ejiao manufacturer) and a member of Shandong's provincial legislature, has advocated for government support for donkey husbandry. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Donkey-hide gelatin」の詳細全文を読む スポンサード リンク
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