Learn about sake
What is Alcohol beverage or Sake?The National Tax Agency of Japan, which controls alcohol beverages, defines them as beverages containing no less than 1% alcohol, and categorizes them into 4 types; brewed, distilled, mixed and effervescent. Thinking about the difference in manufacturing method, it can be categorizes them into three types, brewed , distilled, mixed.
Sake belongs to brewed alcoholic beverages. While unrefined sake is called Doburoku, a clear one is called Seishu, whose definition under the Liquor Tax Act is summarized as below;
“Seishu is an alcoholic beverage of less than 22% alcohol, including 1) the one which is fermented from the raw materials rice, rice koji and water and has then been strained, or 2) the one into which seishu kasu (sake cake) and other permitted materials as stipulated by government ordinance have been added, or 3) Seishu into which seishu kasu has been added.”
Whatever it is, ‘straining Moromi’ is required. However, since how much it should be strained is not specified, Nigorizake (literally cloudy sake) can also receive the Seishu status.
In addition, if the alcohol content exceeds 18-20 %, yeast itself dies. Though, theoretically, there is no such liquor with higher alcohol content, some breweries are challenging to make such sake it has close to 22 % alcohol.