PROBLEM TO BE SOLVED: To provide a seasoning for adding flavor or taste that is developed in a stewing or boiling down process, and a manufacturing method therefor and foods containing the seasoning.SOLUTION: There is provided a method of manufacturing a seasoning including a process of heating fermentation seasoning, saccharides and vegetable essence at a heating temperature of 55°C to 100°C for a heating time of 30 minutes to 5 hours and a process of feeding gas including oxygen.SELECTED DRAWING: None【課題】煮込みや煮詰め工程にて発現する風味や呈味を付与する調味料及びその製造方法および該調味料を含む食品を提供する。【解決手段】発酵調味料、糖類及び野菜エキスを、加熱温度が55℃以上100℃以下及び加熱時間が30分間以上5時間以下で加熱する工程と、酸素を含む気体を給気する工程を含む調味料の製造方法。【選択図】なし