The present invention provides roasted coffee beans that can be stored in the air without experiencing damage to the inherent taste and aroma of coffee and with the change in flavor over time and the oxidative deterioration being suppressed to ensure that they retain a satisfactory flavor. Specifically, ethyl isovalerate or fermented, roasted coffee beans that have been subjected to fermentation and roasting are incorporated in roasted coffee beans.本發明提供一種即使在空氣中的保存,仍不致於影響咖啡原來的味道或香味之下,能抑制因經時變化所引起之風味的變化或因氧化所引起之劣化、且風味良好的烘焙咖啡豆。具體而言,使烘焙咖啡豆中含有異戊酸乙酯或經醱酵且烘焙處理之醱酵烘焙咖啡豆。
