Photo may have been deleted

Remember the story about the guy who buried a Big Mac for one year, then dug it up and ate it on his 40th birthday?

He wanted to prove fast food is so loaded with artificial preservatives that it never spoils - even after a year underground.

On Wednesday, Burger King announced a new campaign that includes a moldy Whopper to prove their food does not contain artificial preservatives.

According to a press release, Burger King food also doesn't contain flavors from artificial sources. More than 90 percent of ingredients used in Burger King restaurants are free of preservatives.

"The Burger King brand is currently rolling out the Whopper sandwich with no preservatives, colors, or flavors from artificial sources in the U.S.," said Christopher Finazzo, President of BK's North America.

The new Whoppers are available in 400 markets in Europe and select markets in the United States. The sandwiches will reach all markets by the end of the year.