This was my first foray into the world of sake, and, I must say, it has left a very good impression. Since I am not really familiar with what makes sake "good" or "bad," I can't really speak to the "quality" of this particular beverage, but I thought that it was delicious. It tastes a lot like wine (primarily because it is), but less fruity and with a stronger alcohol kick. I don't really have a whole lot to say about the drink, as I have nothing to reference it against, but I really enjoyed it. I drank the first half of the sixteen ounce container at room temperature, and then the second half chilled in the refrigerator. It was a little bit better chilled, as it mellowed the alcohol sting a bit, but it was still great both ways. I am going to heat it next time, so I'll make another short post when I get around to it. As a side note, sake, contrary to popular western belief, is not traditionally served warm. Sake is served at a variety of different temperatures, typically based on the season (i.e. warm in the winter, chilled in the summer), so I have committed no foul by not drinking this warm.
Also worth note is the novelty of the container. The white top on the bottle actually doubles as a sake cup.
Apparently, they sell this in convenience stores all over the place in Japan. It is indeed very convenient.
Verdict: Highly Recommended, but take the recommendation with a grain of salt.