Concentrated fermented milk and a method for producing the same, particularly, a concentrated fermented milk having an increased viscosity and a method for producing the same are provided. A two-layer type fermented milk product and a method for producing the same are provided. A method for producing fermented milk, wherein the concentrated fermented milk is cooled and stored at a predetermined temperature for a predetermined time to increase the viscosity. A method for producing a two-layer type fermented dairy product in which a sauce containing pulp and / or fruit juice is laminated on fermented milk and accommodated in a container, wherein the fermented milk is charged at a filling temperature of 15 ° C. or less. A method of producing a two-layer type fermented milk product in which the sauce is filled on the fermented milk after filling after filling the container.濃縮発酵乳とその製造方法、特に、粘度が高められた濃縮発酵乳とその製造方法を提供する。二層タイプの発酵乳製品とその製造方法を提供する。濃縮後の発酵乳を冷却し、所定の温度で所定の時間貯液することで粘度を増加させる発酵乳の製造方法。発酵乳の上に果肉及び／又は果汁を含むソースが積層されて容器内に収容されている二層タイプの発酵乳製品を製造する方法であって、前記発酵乳を１５℃以下の充填温度で前記容器内に充填した後、充填後の前記発酵乳の上に前記ソースが充填される二層タイプの発酵乳製品の製造方法。
