When I was in Montreal in last 2005, I happened into the Ta-Ze in the anachronistically-named Centre Eaton on Sainte-Catherine near University. The store sells nothing both olives and olive-related products — oil, soap, books. You can taste all of their products in the store, and they seemed quite knowledgeable about the differences between different varieties.

The store is related to the Turkish Taris Zeytin company.