Mike von Massow, a University of Guelph professor and food economist, says the best way to grocery shop without putting a dent in your wallet is by focusing on the foods that are in season and being flexible with the products and brands you consume. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS Connect with CBC News Online: For breaking news, video, audio and in-depth coverage: http://bit.ly/1Z0m6iX Follow CBC News on TikTok: https://bit.ly/3TnHioe Follow CBC News on