The origins of sake are unclear; however, the earliest written reference to use of alcohol in Japan is recorded in the Book of Wei, of the records of three kingdoms. This 3rd century Chinese text speaks of the Japanese drinking and dancing. Sake is also mentioned several times in the Kojiki, Japan's first written history, compiled in 712.

For a little more information A brief history of Sake

Kubota Sake Senjyu
Kubota Sake Senjyu
Kubota Sake Senjyu. Japanese Refined Sake. This sake is a large bottle of the Senjyu variety. Senjyu is a light, smooth and soft dry sake recommended for sake beginners. It is a sister sake to the higher quality ‘manjyu’ which can sell for a...