The present invention provides a method of preparing a natural sweetener by using onions, a beneficial food material used in cooking or medicinally. According to pharmaceutics or a botany dictionary, onions are known to have the efficacy and pharmacological actions such as being beneficial to alleviating adult diseases, wherein the benefits of onions are mentioned in the following. Onions have effects of lowing and alleviating blood sugar, inhibiting platelet aggregation, discharging phlegm, a perspiration action, a diuretic action, accelerating the excretion of sodium chloride, accelerating blood circulation, a detoxifying action, a sterilization action, accelerating digestion, alleviating fever, relieving cough, coronary artery dilatation, inhibiting cholesterol-elevation, a preservation action, an anti-cancer effect, promoting hair growth, and discharging heavy metals. Furthermore, onions help relieve dozens of diseases such as hypertension, insomnia, inflammation, thrombosis, diabetes, chronic pulmonary diseases, scurvy, fire or water burns, symptoms related to toxic mosquito bites, nervousness, body weakness, getting old early with facial wrinkles, sudden hair loss, bronchitis, sinus cold, dryness, ulcer stone, dermatitis, intestinal incompetence, enteritis, constipation, anemia, early cold, fever, flu, laryngitis, coronary heart diseases, asthma cough, the discharge of phlegm, vitamin deficiency, gastric ulcer, female diseases, Trichomoniasis vaginitis, diarrhea, arteriosclerosis, colon inflammation, etc.COPYRIGHT KIPO 2016본 발명은 식용 및 약용으로 쓰이는 유익한 식자재 식물인 양파(ONiON)를 이용하여 양파 천연감미료를 제조하고자 하는 발명인 것이다, 양파는 약재학 또는 식물학 대사전에 보며는 다음과같은 효능 및 약리작용을 한다고 알려져있다.양파는 혈당낮춤작용, 완하작용, 혈소판응집 억제작용, 거담작용,발한작용, 이뇨작용, 염화나트룸 배설축진작용,혈액순환축진작용, 해독작용, 살균작용, 소화촉진작용, 해열작용, 진해작용, 관상동맥확장작용,콜레스테롤상승억제작용, 방부작용,항암작용,중금속배출작용, 고혈압,불면증,항염, 항혈전, 당뇨병,만성폐병,괴혈병, 불.또는물의화상에, 독모기풀렸을 때, 신경질, 신체허약, 얼굴에주름살이늘고 일찍 늙는데, 감자기 머리가 빠지고 나지않을 때,기관지염,코감기,건위,궤양석피부병,발모촉진 장무력증,장염, 이뇨변비 빈혈,소화촉진,초기감기,발열,독감,후두염,관상심장질환,천식기침,거담
