Burger King Canada is moving towards using 100 per cent Canadian beef in all its restaurants across the country.

It's a sign of support for the country's beef industry, decimated by the fall-out from the single case of "mad cow disease."

The fast food chain says as soon as it can secure an adequate supply of beef, all 360 restaurants of its restaurants will feature only Canadian beef.

Burger King currently buys 3 million kilograms of Canadian beef each year.

Some Saskatchewan teens are taking credit for forcing the issue. Last weekend the teens picketed a Burger King outlet in Moose Jaw calling for more Canadian beef on the menu.

One teen, 14-year-old Rhyann Duffey said she was spurred to action because of the uncertainty her family's ranch faces.

The teens plan to target Arby's next.