Multiple Parallel Fermentation (MPF)
combines activities of Yeats and kojikin, a special mold that converts rice starch to sugar and sugar to yeast simultaneously in the same vessel.
“Kojikin”
Aspergillus oryzae
A special green powdery mold native to Asia that converts rise starches to sugar during MPF. It is sprinkled over the rice.
Milling or “Polishing”
rice is milled or “polished” to remove outer husk of rice grain. Sake is labelled according to the degree it has been milled. The term used for Sakes rice polishing ratio is “Seimabuai”.
Shinpaku
starchy heart of the rice grain, considered to produce the best Sake.
Sake Meter Level/ “nihonshu-do”
Warm Sake vs. Chilled Sake
Basic Sake Production Steps
Importance of Water
Hard Water
rich in calcium, magnesium and phosphorous. It promotes faster fermentation and results in a drier and sharper sake.
soft water
low in mineral content. Results in a slower fermentation and a smoother sake.
Brewers Alcohol
neutral spirit that is added to sake to extract fruity and floral aromas from rice solids, as well as lightening the body of sake.
Main Types of Sake
Minimum Rice Polishing % remaining
Ginjo: 60%
Honjozo: 70%
Daiginjo: 50%
*** nigiri is not a type of sake but a style of filtration.