I have a few things I'm trying to get my hands on here in Montreal so am just going to put them all in one post.
watercress - I haven't seen this before, but then again, I haven't looked, and it's entirely possible this can be had at the most basic supermarket. Is it? And if not, where can I get it (fresh)?
bonito - I want to make my own dashi, and would like to purchase a chunk of the dried (smoked?) bonito for this, rather than the pre-flaked stuff - is this available?
daikon radish (fresh) - again, possible this is readily available...