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Celebrate this Saint Patrick's Day with free fries, green ketchup at Burger King

Green ketchup included

DETROIT, Mich. – Burger King is offering free French fries with green ketchup for two days during the St. Patrick's weekend.

BK locations will be giving away one value-sized order of fries per customer on Saturday and Sunday, while supplies last.

Heinz will provide special green ketchup, made green by added food coloring.

There is no purchase necessary, and you don't need to bring in a coupon.