It possessed the physical properties which are superior as the one for stratified wheat flour swelling food such as pie croissant denitsushiyupesutori at the same time, it designated that water type emulsification ones in the plasticity oil which does not contain trance acid substantially are offered as topic. The hard oil and fat of lauric acid subject (the division high fusion point section of the palm kernel oil, the extreme hadrogenated oil and the like of the extreme hadrogenated oil of the palm kernel oil and the oil of the classified by palm nuclear oil content) 10 - 50 weight % it contains, it can obtain water type emulsification ones in the plasticity oil which is suited for the one for stratified wheat flour swelling food which does not contain trance acid substantially SFC of oil phase 50 or more, by making 10 or less with the 35 with the 10 .パイ・クロワッサン・デニッシュペーストリーなど層状小麦粉膨化食品用として優れた物性を有し、かつ、トランス酸を実質的に含有しない可塑性油中水型乳化物を提供することを課題とした。ラウリン酸主体の硬質油脂(パーム核油の分別高融点部、パーム核油の極度硬化油、パーム核油分別油の極度硬化油など)を10~50重量%含有し、油相のSFCが10℃で50以上、35℃で10以下とすることにより、トランス酸を実質的に含有しない層状小麦粉膨化食品用に適した可塑性油中水型乳化物を得ることができる。
