No margarine at all was permitted in Prince Edward Island at the time. It became the last province to remove a ban on the sale of margarine, coloured or not, in March 1965.

Even though margarine's image has been suffering for years, overall U.S. sales of margarines and spreads still came to $1.81 billion last year, according to industry tracker Euromonitor International.

Over the years, margarine has garnered a bit of a negative reputation; however, this is in part due to actions by the dairy industry. Here's what happened.

The story of margarine dates back to the mid-1800s in France and includes an interesting tale of Canadian interprovincial trade. Food shortages, especially for edible fats, stimulated a 19th ...