I still think the best place in the city for mussels is
Bruna's Ristorante in the city-christened 'Heart of Italy' on South Oakley Ave.
Bruna's has been in this location since 1933. I've been a patron since 1979, and while the price of the mussels marinara has risen, the quality has stayed the same. Plump, not-too-big mussels, opened just enough & bathing in a tomato-based broth/gravy redolant of Italian parsley and a little cayenne.
When they were young, my daughters would use the mussel shells as their 'spoon' to scoop up the gravy like soup. They still haven't learned any better, and it's traditionally their go-to place in the city when home from college.
I know LTH'ers debate the worth of some of Bruna's other entrees, but this is one that always stands out.
Bruna's Ristorante
2424 S. Oakley Ave.
Chicago, IL
(773) 254-5550P.S. To Jayz's flippant comment on tomatoes in this thread, the FDA & CDC ultimately determined that it was jalapeno & serrano peppers,
not tomatoes, that were the cause of the salmonella outbreak during the scare last summer. Millions of dollars were lost by tomato growers & handlers during that time.