Being a native of Pittsburgh I havea always heard tales of the best burger in Pittsburgh. Most of those tales had Tessaro's as the destination in question. The first time and every subsequent time I have been there has held up to it's legend. Don't get me wrong, there may be better burgers in Pittsburgh, but I have yet to find them.
Tessaro's has not only great burgers but also other foods that are delicious. Their menu is similar to what you would find in a steak house. They serve a lot of fish and steak aside from their burgers. After eating several different meals at Tessaro's I can say with no doubt that my favorite thing there is the "Bacon-Bleu" burger with crumbled blue cheese (rather than creamy because they give you the opion). The bacon is amazing, the blue cheese melts to the bun within a coulple of minutes and the burger mean is so fresh that you can distinctly taste its freshness.
The ambiance of the place is really nice too. It is an older place which has kept that old Bloomfield feel still to this day. Everyone is extremely nice there. The owner is usually there at the door to greet you and is always willing to have a nice conversation with you in the time when she is not flying around trying to get people in their seats.
The only downfall with Tessaro's and this is not their fault is that they are alway's almost too busy. Because this place way a neighborhood bar at one point it doesn't exactly have a lobby for you to wait in while you wait to be seated so that part of your dinner may be a bit uncofortable but all in all Tessaro's will be a great experience, espescially for those who are a fan of the old fashion hamburger and beer.