PURPOSE: A method of freezing yacon is provided to be a snack which is loved by people all ages. CONSTITUTION: A method of freezing yacon comprises the following steps. The first step is that yacon is selected, washed and peeled. The second step is that the pilled yacon is pulverized. The third step is that the pulverized yacon 0.3 by weight is dipped into a refined salt solution. The fourth step is that the dipped yacon is dipped into a vitamin C solution for 5-10 minutes not to be discolored. The fifth step is that the vitamin C dipped yacon is frozen to the temperature of -20--35>；=. The sixth step is that the frozen yacon is pressurized at 0.3-0.5 torr at below 30>；=. The seventh step is that the frozen yacon is packed. In the first and the second steps, the following steps are added. The pilled yacon is steamed for 3-5 hours at a temperature of 200-250>；=. The steamed yacon is frozen for 30-50 minutes at -5--15>；=. The frozen yacon is thawed for 5-10 minutes at -10--15>；=. The frozen and seasoned yacon is thawed for 10-30 minutes at a room temperature. [Reference numerals] (AA) Washing and peeling； (BB) Pulverizing； (CC) Blenching； (DD) Dipping in a vitamin C solution； (EE) Rapidly freezing； (FF) Decompressing； (GG) Packing；본 발명은 동결건조된 야콘을 제조하는 방법에 관한 것으로 야콘을 선별하고 세척 박피하고 절단한 후 0.3중량%의 정제염 용액에 침지시켜 블랜칭하고 0.1중량%의 비타민C 용액에 5분 ~ 10분간 침지시켜 변색을 방지한 후, 6시간 이내에 -20℃ 내지 -35℃에 도달시키는 급속동결과정을 거친 후, 품온 30℃이하에서 진공도가 0.3～0.5 토르(Torr)가 유지되도록 하는 감압한 후 포장하는 단계로 구성된다.상기 제조방법에 의하여 동결건조된 야콘은 바삭거림, 맛, 풍미, 질감이 우수하여 스낵류의 간식거리로 활용한다면 야콘 재배농가의 소득향상에 크게 기여할 수 있다.
