There are 3 famous premium burger chains in US. Shake shak burger, in &out and 5guys. Pittsburgh has two of 5 guys and I went to the one near by U. Pitt.
Its burger is amazing. You can see fresh ingredients on the picture I attached. So tasty and Sooo Huge. They provided diverse topping options but I simply chose "everything ".
Its potato was totally different from others in a great way. Although its amount was really big, I didn't make any leftovers. Rich flavor and crispy texture stimulated my appetite.
Don't forget about savory peanuts! You can try for free.