PROBLEM TO BE SOLVED: To provide acidic oil-in-water type emulsified food having a stable emulsified condition even after heated, and excellent in heat resistance.SOLUTION: The acidic oil-in-water type emulsified food is produced by: admixing dried albumen and phospholipase(A)-treated egg yolk together and subjecting the dried albumen to desugaring treatment and heat storage treatment at &ge65°C: wherein the heat-coagulated material in the dried-albumen aqueous solution (7 pts.wt. of pure water to 1 pts.wt. of the dried albumen) has a syneresis ratio of &le4 wt.%.COPYRIGHT: (C)2009,JPO&INPIT【課題】加熱後も安定な乳化状態を有した耐熱性に優れた酸性水中油型乳化食品を提供する。【解決手段】乾燥卵白およびホスホリパーゼA処理卵黄を配合し、前記乾燥卵白が脱糖処理および65℃以上で熱蔵処理が施されており、且つ乾燥卵白水溶液(乾燥卵白1部に対し清水7部)の加熱凝固物の離水率が4%以下である酸性水中油型乳化食品。【選択図】 なし