An aerated water comprising allulose, a method of preparing an aerated water, a method of improving taste of an aerated water, a method of maintaining carbon dioxide pressure of an aerated water, and use of allulose for maintaining carbon dioxide pressure of an aerated water are disclosed.本發明揭露一種包含阿洛酮糖的汽水、一種製備汽水之方法、一種改善汽水味道之方法、一種維持汽水之二氧化碳壓力之方法,以及一種阿洛酮糖之用途。