To buy or not to buy Canadian? That's the question many local business are pondering as a trade war with the U.S. looms. 

For two Guelph-based food businesses the only answer is to make an effort to buy mainly Canadian products. 

Kanoo Coffee has changed its business model in reaction to the threat of tariffs and the trend to Buy Canadian, while The Neighbourhood Group's various restaurants in Guelph and Kitchener have been buying Canadian — mainly in Ontario — all along. 

Kanoo Coffee sold coffee…