A friend of mine insisted we go to Le Gros Jambon when I moved to Montreal. It's a cozy gourmet diner. It's a narrow space, with stools by the counter. The staff are very friendly. You'll find lots of decadent fare like mac & cheese (all different kinds, from classic to lobster), grill cheese (add duck confit if you'd like) and burgers made with Coke. I hear their brunch is really good, but I haven't been yet. You can also order alcohol. They had a cute little candy bar set-up in front of the diner, for $2, you can take a little baggie and fill it up - a novel idea.