Chocolat

Chocolat is about a war between the forces of paganism and Christianity, and because the pagan heroine has chocolate on her side, she wins. Her victory is delayed only because, during Lent, a lot of the locals aren't eating chocolate.
The movie takes place "once upon a time" in a French village where utter tranquillity, by which is meant stagnancy, has reigned since time immemorial, until "a sly wind blew in from the north," bringing with it Vianne (Juliette Binoche), who opened the chocolate shop, after which nothing was ever again the same.

Roger Ebert, rogerebert.com