A friend of mine asked about sake (酒) in Facebook. For some reason I was not able to save my text there so I copy the text here.
Alko sells nowadays two good quality sakes: Okunomatsu Tokubetsu Junmai and Okunomatsu Junmai Ginjo.
The US produced Gekkeikan which is also sold in Alko is not good but I sometimes use it for cooking. The Japanese usually warm low quality sakes because they think it masks the flavors and aroma. Good sake is not generally warmed.
There are many producers and I really don't know them well because the availability in Finland is so poor. All the sakes I tasted in Japan were much better than the Gekkeikan sold in Finland so if someone does not like sake because of it I recommend to try again.
Note that good sake is very delicate drink and doesn't keep well even in an unopened bottle. Something like three months is the upper limit.
Try to find word "junmai" from the the bottle. See Wikipedia about the classification of sake. Prizes are won often by honjōzō which has a little addition of distilled alchol
Well, I could of course email to Japan and ask for recommendations