Yes It is really safe to make homemade enzymes in the fermentation barrel of the fermentation mother. First of all, it is made of food-grade raw materials, which has sterilization effect, contains no harmful substances and is safe and secure to use. At the same time, its special material ensures that it can be used to make fruit and vegetable enzymes, bean sprouts, yogurt, pickles and wine. Its fermentation process is very short, usually 3 to 7 days. It can promote the rapid fermentation of fruits and vegetables with anti-acidification enzyme deep liquid, thus greatly shortening the enzyme production time.