To celebrate St. Patrick's Day, Baskin Robbins will be offering up FREE Samples of Mint Chip 'n Oreo Milkshake on March 17th! No coupon required, just stop by any participating location from 3PM - 7PM to try a sample. The shake features a blend of their two of their popular flavors - Mint Chocolate Chip and Oreo Cookies 'n Cream. Sounds good to me!