This is Gelee of sweet sake. Sweet sake is made from fermented rice. This fermented rice was produced on the process of making Rice wine.
In Japan, people generally drink it in the winter time. However, nowadays, Many people from all over the world take a much attention.
It is called as a drinkable intravenous drip and has a lot of good benefits for your health.
Just mixing with water and you can enjoy it in many ways such as drinking as a sweet sake, topping for yogurt and cereal.