Heinz is introducing the Heinz Dipper . . . a fry box designed with a built-in ketchup pocket for easy dipping on the go.

Heinz has created a French fry box designed with a built-in ketchup pocket for easy dipping on the go.  But it's just a limited-time publicity stunt for now. Have you ever wondered why French fry boxes don't come with special storage for ketchup? Well, if this catches on, they might . . .

The design features a classic fry box shape . . . with an attached side compartment that can be pulled out.  So instead of juggling packets or squeezing sauce directly onto fries, you can dip into the built-in cup.

The Heinz Dipper debuted at select restaurants yesterday, including sports stadiums across 11 countries worldwide.  For now, it's mostly a silly publicity stunt, and they'll only be available "while supplies last."

And you won't find them at McDonald's.  In North America, they're at a few random burger joints . . . with the biggest place being Toronto's Scotiabank Arena, home of the Maple Leafs. (So, they're not at fast food places.)