Amazake is believed to have many health benefits. The process of fermentation transforms rice into a nutritious energy boosting tonic. Rice carbohydrates get broken down by Aspergillus oryzae enzymes into glucose and other saccharides, including oligosaccharides. Glucose gives Amazake its sweetness and the oligosaccharides provide goodness for the gut. The fermentation process also results in the production of essential amino acids and B vitamins.