ISO gumbo file spice (toronto)
Correction: it is spelled "file spice". (Ground sassafras leaves.)
Where can I get this stuff in downtown Toronto?
Southern Accent on Markham just south of Bloor had it the last time I was there (6 months or so ago, you may want to call).
I've gotten Zatarain's file at Lively Life Fine Food in the basement of the south St. Lawrence Market, but it was a few years ago. But they don't really seem like the kind of place that mixes up their selection a whole lot, so I'd bet they still have it.