Le Cartet is a very cozy and great spot for breakfast/brunch/lunch on Rue McGill in Old Montreal. Le Cartet can be very busy on the weekend so get there early if you don't want to wait in line.
We went on Sunday morning and we were seated right away. I had a large coffee moka that was served in a bowl. This was very good, a little weak for me, but still a nice coffee and mocha taste.
I had the blueberry toast and as others have written, the portion sizes are pretty big. This again was delicious and came with fruits and apple butter.
Le Cartet is very popular is seemed with the locals and tourists. That being so, it can get noisy. We were there in June and they had some tables outside also. I enjoyed Le Cartet and would go again when I return to Montreal.