In Canada, the donut is often thought of as the unofficial national food. Donuts are sold at every intersection and rest stop, celebrated in song and story as symbols of Canadian identity, and one chain in particular, Tim Horton's, has become a veritable icon with over 2500 shops across the country. But there is more to the donut than these and other expressions of 'snackfood patriotism' would suggest. In this study, Steve Penfold puts the humble...