The present invention relates to a method for producing shaved ice with grains. The method comprises: a step of containing a base material of shaved ice with grains in which grains and water are mixed in a cooking vessel, and heating the same by means of a cooking tool； a middle fire heating step of heating the base material by middle fire having a temperature lower than that of strong fire； a step of putting water again into a primary grain shaved ice material produced so that moisture is boiled down in the base material by absorption of moisture to grains, and heating a secondary grain shaved ice material by middle fire； a weak fire heating step of lowering a temperature lower than a temperature in a middle fire heating state to heat the secondary grain shaved ice material； a step of producing a third grain shaved ice material obtained by adding salt to the secondary grain shaved ice material； a step of boiling the third grain shaved ice material in a weak fire heating state, and putting water again after a predetermined time passes to make a fourth grain shaved ice material； a minimum weak fire converting step of boiling the fourth grain shaved ice material in a weak fire state for a predetermined time, and then lowering a temperature to a minimum weak fire state which is a temperature lower than that of the weak fire； a minimum weak fire heating step of heating a material at a minimum temperature in the minimum weak fire heating step to produce edible grains to which water is absorbed； a freezing step of mixing ground grains obtained by crushing the edible grains with milk and syrup to produce a frozen grain shaved ice material； and a step of crushing the frozen grain shaved ice material to produce a shredded grain shaved ice.본 발명의 곡물 빙수 제조방법의 구성은 곡물과 물이 혼합된 베이스 곡물 빙수 재료를 조리용기에 담고 조기기구에 의해 가열하는 단계； 상기 베이스 곡물 빙수 재료를 센불보다 더 낮은 온도인 중불로 가열하는 중불 가열 단계； 상기 베이스 곡물 빙수 재료에서 곡물이 수분을 빨아들여서 수분이 졸아들도록 만들어진 1차 곡물 빙수 재료에 물을 다시 투입하여 2차 곡물 빙수 재료로 만들어서 중불로 가열하는 단계； 상기 중불 가열 상태에서의
