What drink is fermented twice?

Here's how it works:

* First Fermentation: Rice is cooked and mixed with koji (a type of mold), which converts starch into sugar. This is called "shubo" and is the first fermentation.

* Second Fermentation: The shubo is combined with water, yeast, and more rice to start the alcoholic fermentation. This results in the final sake.

Let me know if you want to know more about sake!