This beverage supply device (1) supplies at least carbonated water (60). Further, the beverage supply device is provided with: a water supply path (24) which supplies the water (50)； a carbon dioxide gas supply path (32) which supplies carbon dioxide gas； a carbonation tank (30) which adds carbon dioxide gas supplied from the carbon dioxide gas supply path (32) to water (50) supplied from the water supply path (24) to generate carbonated water (60), and stores the carbonated water (60)； a carbonated water delivery path (26) which delivers carbonated water (60) from the carbonation tank (30)； and a bypass path (27) which connects the water supply path (24) and the carbonated water delivery path (26).飲料供給裝置(1)，是至少供給碳酸水(60)。且，具備：供給水(50)的水供給路(24)、及供給碳酸氣體的碳酸氣體供給路(32)、及朝從水供給路(24)被供給的水(50)加入從碳酸氣體供給路(32)被供給的碳酸氣體而生成碳酸水(60)並將碳酸水(60)貯留的碳化槽桶(30)、及將碳酸水(60)從碳化槽桶(30)送出的碳酸水送出路(26)、及將水供給路(24)及碳酸水送出路(26)連接的支管路(27)。
