Free tostones deal at Pollo Tropical Expired Feb 202013 If you're new here, you may want to subscribe to our daily email updates. Thanks for visiting! Snag an order of tostones, which are fried plaintains, for free with any purchase at Pollo Tropical. The offer is valid to February 24 at participating Pollo Tropical restaurants. A coupon for the deal is featured on Pollo Tropical’s Facebook site. Comments are closed.