Burger King has a free 20 ounce soft drink with purchase of a Whopper through June 26, 2011.

This deal is good with the a la carte purchase of a flame-broiled WHOPPER®, DOUBLE WHOPPER®, TRIPLE WHOPPER® or ANGRY WHOPPER® Sandwich.   Not valid with Junior Whoppers.

Burger King says this promotion is available at participating BURGER KING® restaurants nationwide until June 26, 2011.

“At BURGER KING® restaurants we are celebrating the beginning of summer by giving our customers the simple pleasure of a fresh, flame-broiled WHOPPER® Sandwich paired with a free, 20 ounce ice-cold soda,” said Andreas Barth, senior vice president, North America marketing, Burger King Corp. “The WHOPPER® Sandwich exemplifies our HAVE IT YOUR WAY® brand promise by delivering a superior quality burger based around individual taste preferences.”

Burger King has more than 12,000 restaurants worldwide.  Burger King’s announcement of the deal is on their website here: http://www.bk.com/en/us/company-info/press/press-release2155.html