The present invention relates to a manufacturing method of a grain syrup, comprising the steps of: collecting a four year old or more fresh ballon flowers； manufacturing marinated red ballon flowers via washing, steaming and a drying process； mixing liquid extracts from the mixture of the red ballon flowers, dried radish, and dried leaves of the radish via double boiling with malt and steamed rice and then making the same sugar； and concentrating a filtrate from the previous step.본 발명은 4년근 이상된 생도라지를 채취하여 세척, 증숙, 건조과정을 거쳐 숙성 홍도라지를 만들고, 그 홍도라지와 말린무 및 무시래기를 혼합 중탕하여 추출한 액상과 엿기름 및 찐 쌀을 혼합하여 당화 후 여과액을 농축하여 조청을 만드는 조청제조에 관한 것이다.
