3 ms·Yeah it's in practically every grocery store where I am in Canada.by Cide 5y agoYeah it's in practically every grocery store where I am in Canada.nkmnz 5y ago80% of Maille’s mustard seeds come from Canada.fsckboy 5y agoaccording to wikipedia, a long time ago the French makers of Grey Poupon bought out the competing French brand Maille. https://en.wikipedia.org/wiki/Grey_Poupon#History https://en.wikipedia.org/wiki/Grey_Poupon#History