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Tofu skin, yuba, bean curd skin, bean curd sheet, or bean curd robes, is a food product made from soybeans. During the boiling of soy milk, in an open shallow pan, a film or skin forms on the liquid surface. The films are collected and dried into yellowish sheets known as tofu skin. Since tofu skin is not produced using a coagulant, it is not technically a proper tofu; however, it does have similar texture and flavour to some tofu products. Tofu skin's use was first documented in written records in China and Japan in the sixteenth century. It is widely used, fresh, fermented, or dried, in Chinese and Japanese cuisine. ==Early history== An early written reference to tofu skin appeared in 1587 in Japan in the ''Matsuya Hisamatsu chakai-ki'' (diary of the Matsuya's family's tea ceremonies ). The writer, Matsuya Hisamasa, states simply that tofu skin is the film that forms atop soymilk.〔 Other written references to tofu skin appeared around that time in China in the ''Bencao Gangmu'' (great pharmacopoeia ) by Li Shizen. This work was completed in 1578, but not published until 1596. Chapter 25 states: A third known reference to tofu skin appears in 1695 in Japan in the ''Ben Zhao Shi Jian'' (Wade–Giles: Pen Chao Shih Chien (Mirror of Food in This Dynasty, 12 volumes ). This book was written by Hitomi Hitsudai in Japan, in Chinese. When Japanese read the Chinese characters for tofu skin, ''doufu-lao'', they pronounce them ''tōfu no uba. Lao'' or ''uba'' means "old woman" or "wet nurse". 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「Tofu skin」の詳細全文を読む スポンサード リンク
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