PROBLEM TO BE SOLVED: To provide a sterilized fermented milk in which diameters of aggregates or particles that occur during heat sterilization of the fermented milk are less likely to increase.SOLUTION: A method for manufacturing a sterilized fermented milk includes: obtaining a fermented milk by fermenting a raw material milk； and subjecting the obtained fermented milk to heat sterilization which intends to suppress an increase in diameters of aggregates or particles in the fermented milk by controlling a temperature of the fermented milk and a temperature difference (Δt) between the fermented milk and a heat medium.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】発酵乳を加熱殺菌する際に生じる、凝集物あるいは粒子径の増大を抑制した殺菌発酵乳を得ることを課題とする。【解決手段】殺菌発酵乳の製造方法であって、原料乳を発酵させ、発酵乳を得る工程；及び得られた発酵乳を加熱殺菌する工程であって、発酵乳の温度、及び発酵乳と熱媒との温度差（Δｔ）を制御し、発酵乳における凝集物又は粒子の径の増大を抑制する工程を含む、製造方法を提供する。【選択図】なし
