Several years ago I cooked up some merguez that I had bought in the kosher butcher at the Cavendish Mall. They were great and have yet to be matched. As I recall they were all lamb and had a good spicy cuminy flavor.
I have tried a merguez sandwich in Jean Talon. Can't remember the shop, either next to Hamel or to Marche des Saveurs, but it was not as good.
Any advice on where the good ones are to be found? I don't care in what form it appears, either sandwich, straight, or with couscous. I am looking for something that is all-lamb and spicy, ideally hardwood-grilled, but that may be asking too much.
I recalled seeing them at Basha, but they looked and tasted a bit tired.
By the way for those in the States, the most widely available merguez, D'Artagnan, suck compared to the real thing. Don't waste your money on them.