Burger King: FREE Fries and Green Heinz St. Paddy’s Day Sauce March 17-18! March 13, 2012 by Jennie The links in the post below may be affiliate links. Read the full disclosure.Print Participating Burger King locations will be giving away FREE Fries served with Heinz St. Paddy’s Day Sauce on March 17th and March 18th! There is limit on value-sized fries per customer, while supplies last.
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