Ama-zake: Ama 甘 means sweet. Zake 酒 means sake.
Amazake is well-known in Japan because it is a nutritious drink. Because of that, many supermarkets prepare many different kinds of Amazake 甘酒.
Kome-koji Amazake 米麹甘酒
Sake-kasu Amazake 酒粕甘酒
This is Japanese sake lees called Sake-kasu 酒粕. You can buy it at supermarkets.
Sake-kasu contains fermented rice and a certain amount of alcohol that is leftover from the process of making the sake.
For this reason, Amazake made with Sake-kasu had a little bit of alcohol. If the Amazake is boiled enough, it then contains less than 1% of alcohol.
Water, Sake-kasu 酒粕, Sugar or Honey (If you want, you can also add grated ginger, salt, fruit juice and so on.)
Boil and stir the ingredients.
Mixed type of Amazake
These blue and red cans are made from Kome-koji and Sake-kasu. (Less than 1% alcohol)
Pink one is made from Kome-koji. (0.00% alcohol)
These websites are in Japanese.
In Japan, people use Sake-kasu (sake lees) for Japanese traditional food and so on.