Sin Ju has a superb sake menu if you are into that sort of thing. I also think that they have the best sushi chefs in Portland. As far as sake goes, I personally recommend the Kasumi Tsuru Namazake. It's a true unpasteurized sake that is imported from Japan. If you are into cask conditioned beers, the unpasteurized sake essentially is like comparing a cask beer to a bottled beer.