Could the rising price of groceries be chalked up to corporate greed? That was the question at a House of Commons committee last week when the executives of Canada’s three biggest grocers testified. Loblaw Cos. Ltd. president Galen Weston, CEO of Empire Co. Michael Medline and CEO of Metro Inc. Eric La Flèche all refuted claims that they were gouging customers under the guise of inflation.Food economist Michael von Massow says blaming Canada’s big grocers doesn’t explain the complex web of factors that have led to sustained food inflation. He helps untangle exactly what’s behind the rise, how much ‘greedflation’ is a part of it and how Canada could make things easier for consumers.Questions? Comments? Ideas? Email us at thedecibel@globeandmail.com