The present invention relates to a method of producing a beverage using onion skins. More specifically, the method includes: a cleaning step (s110) of cleaning onion skins, immersing the cleaned onion skins in water in which baking powder (NaHCO3) is diluted, and cleaning the onion skins again in the running water a roasting step (S120) of removing water from the cleaned onion skins in the cleaning step (s110) using a centrifuge, drying the onion skins, and roasting the onion skins for eight hours at a temperature of 100°C an extraction step (s130) of immersing the roasted onion skins in the roasting step (s120) in a mixed solution in which water and alcohol are mixed at a ratio of 1:2 for 24 hours to extract quercetin, the active constituent in onions a pulverization step (S140) of putting the alcohol in which the extracted quercetin is dissolved in the extraction step (s130) into a vacuum dryer to evaporate the alcohol and pulverize the quercetin into powder a concentration step (s150) of taking out the onion skins in the extraction step (s130), putting the onion skins into a steam pot to get onion skin water, and concentrating the onion skin water in a low-temperature dryer for seven to eight hours at 10 - 20 brix a mixing step (s160) of mixing the quercetin powder pulverized in the pulverization step (s150) and the onion skin water concentration concentrated in the concentration step (s150) at a ratio of 1:10 and a production step (s170) of mixing and diluting the concentration which is mixed in the mixing step (s160) and contains the quercetin into a beverage base to produce a beverage.COPYRIGHT KIPO 2014본 발명은 양파껍질을 이용한 음료 제조방법에 관한 것으로서, 보다 상세하게는 양파껍질을 흐르는 물에 세척하고, 베이킹파우더(NaHCO3)가 희석된 물에 세척된 양파껍질을 담궜다가 다시 흐르는 물에 세척하는 세척단계(s110) 상기 세척단계(s110)에서 세척된 양파껍질을 원심분리기를 이용하여 수분을 제거하고, 건조기에서 건조한 뒤 100℃에서 8시간 동안 로스팅하는 로스팅단계(s120) 상기 로스팅단계(s120)에서 로스팅된 양파껍질을 1:2 비율의 물과 알코올 혼합액에 24시간 동안 침전시켜서 양파껍질의 유효성분인 퀘라스틴을 추출하는 추출단계(s130) 상기 추출단계(s130)에서 추출된 퀘라스틴이 녹아있는 알코올을 진공건조기에 넣어
