It's kind of funny my friends and relatives from Italy always go mad for sauerkraut when visiting me.

I wouldn't eat it without anything else but imho it can be a good side dish, together with German Knödels, Salad and Beef.

Also there is a huge number of variations of it and therefore how it does taste. At least here, in Central Europe, Germany, Austria, Benelux, Poland and so on.

The best sauerkraut I ever ate, was in Alsace, a region of France which is famous for its sauerkraut.

Personally, I never had a reuben sandwich, I had to google it ;P