PROBLEM TO BE SOLVED: To provide a milk-containing beverage improved in thermal stability without requiring any complicated process and without using any additive such as an emulsifying agent or a stabilizer and to provide a method for producing the milk-containing beverage.SOLUTION: The milk-containing beverage is produced by adjusting pH of milk adjusted to have a prescribed protein composition ratio (casein protein/whey protein) so as to have thermal stability when using both of skim milk and whey raw material.COPYRIGHT: (C)2013,JPO&INPIT【課題】煩雑な工程を必要とせず乳化剤、安定剤等の添加剤を使用することなく熱安定性を向上させた乳入り飲料および乳入り飲料の製造方法を提供する。【解決手段】所定のたん白質組成比(カゼインたん白質/ホエイたん白質)に調整した乳のpHを所定の範囲に調整することによって、脱脂粉乳とホエイ原材料を併用した場合の熱安定性を付与する。【選択図】なし