I was a little skeptical of small-town ethnic food, but Sir G's on Sheridan in Ely was delicious. I was extremely impressed. If it were in Minneapolis, I'd be a regular, and I'm sad it's not and I'm not. Sir G's will be a regular stop on future trips up north.
I'm not qualified to evaluate authentic, but they make all their own pasta and it sure tasted great to me. I particularly recommend the lasagna and the combination red/white sauce. Portions at dinner are very generous, so be warned.