PROBLEM TO BE SOLVED: To provide an 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 comprises combining dried albumen and phospholipase A treated egg yolk together, wherein the dried albumen is such that desugaring treatment has been performed and heat storage treatment at 65-75°C has been performed to a drying treatment object having at least pH 9 while removing carbon dioxide, and the heat-coagulated material of the dried albumen aqueous solution (7 parts of pure water to 1 part of the dried albumen) has a syneresis ratio of at most 3%.COPYRIGHT: (C)2013,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pH9以上の乾燥処理物に65~75℃で二酸化炭素を除去しながら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3%以下である酸性水中油型乳化食品。【選択図】 なし