Tessaro's is one thing: Pittsburgh.
In what I consider to be the most classic of Pittsburgh neighborhoods at the current time, Bloomfield, this is a landmark. The staff oozes old-school Pittsburgh. The decorations are nothing special. The clientele ranges from high-class businessman to the stoner down the street to mom and pop out for Friday dinner. And all those people are typically there for one thing: the burgers. I agree with the other reviews that tout this place as having the best burgers in Pittsburgh. The only complaint that I have is that I reek of garlic and spices for the next 2 days after eating there- the food is that intense. Also- it isn't necessarily worth it to get one of their more specialty burgers (cheese, bacon, etc)- the meat itself should get the job done. If you want a good microcosm of Pittsburgh and a great burger- this is your place.