In addition to what kind of food you're looking for, what's your budget?
A general word of advice that applies everywhere else is: stay away from restaurants in the center and places that expose their menu outside with papers in fancy serif fonts.
The type of food almost doesn't matter to me. I should have phrased the question as "what are your favorite places to eat in Milan?".
I love finding places that are "better than they should be" if that makes any sense. I don't mind spending a lot on a meal if it exceeds expectations. I am easy to please.