Each Subject (male and female) made Kuchikami rice moromi (mash) by chewing 200 g or 300 g of steamed rice. After 2 days, the chewed moromi contained 11.2-14.9% of direct reducing sugar, 23.5-33.8% of total sugar and an acidity of 1.2-1.7 ml, respectively. The presence of maltose, maltotriose and glucose were confirmed by qualitative thin laver chromatorapic analysis. The concentration of these saccharides showed a slight difference depending on the person chewing the moromi and the period (days) after chewing. The moromi produced 0.2-5.8% of alcohol after 15-36 days of fermentation. It also contained 2.5-11.7% of direct reducing sugar, 13.0-17.0% of total sugar, an acidity of 10.5-32.5 m l and an amino acidity of 0.6-3.0 m l , respectively. Saccharomyces sp. with glucose and maltose fermentation ability, and Lactic acid bacteria were universally isolated from moromi. However, the isolation of film forming yeasts (Pichia sp. and Hansenula sp.) differed between each moromi.