The present invention provides a manufacturing method of cold brewed tea, which includes the following steps: (a) mixing tea leaves with water in a feeding tank having a 0th temperature to obtain a preliminary tea mixture, wherein the 0th temperature exceeds 15 DEG C but is lower than 25 DEG C and, (b) passing the preliminary tea mixture sequentially through at least three extraction tanks configured with ultrasonicators to obtain the cold brewed tea. The method of the present invention may extract the fragrance and flavor from tea leaves in a short period of time, making the tea tasted fragrant and sweet but not bitter and possess the light and sweet mouthfeel of cold brewed tea.一種冷萃茶的製造方法,包含下列步驟:(a)在一具有一第零溫度的投料槽中將茶葉與水混合後,得到一茶湯初混液,該第零溫度超過15℃但未滿25℃;及(b)使該茶湯初混液依序通過至少三設置有超音波震盪設備的萃取槽後,得到冷萃茶湯。藉由本發明之方法可以在短時間內萃取出茶葉中的香氣與風味,使茶湯芬芳甘美而不苦澀,具有冷萃茶清淡甘香的口感。1‧‧‧冷萃設備10‧‧‧投料槽11‧‧‧第一萃取槽12‧‧‧第二萃取槽13‧‧‧第三萃取槽14‧‧‧第四萃取槽15‧‧‧管路單元16‧‧‧溫度控制單元17‧‧‧超音波震盪單元
