Baskin-Robbins said participating shops nationwide will be offering a free sample of its Mint Chip 'n Oreo Cookies milkshake on St. Patrick’s day — Saturday, March 17 — from 3 p.m. to 7 p.m. The milkshake is made with two of its most popular flavors, mint chocolate chip and Oreo cookies 'n cream, blended into a rich, minty treat.

The offering is just one of Baskin-Robbins' featured milkshake flavor combinations. Guests are encouraged to become "milkshake mixologists" and create new milkshake flavors all their own by blending two of their favorite ice creams into one tasty shake, the company said. They may also share their "milkshake mixology" combinations with Baskin-Robbins on social using the hashtag #BRShakeItUp.         

"Baskin-Robbins' milkshakes are classic treats that our guests know and love, but one thing they may not know is that they can combine any two ice cream flavors into a single milkshake to create a whole new flavor combination all their own," said Katy Latimer, vice president of culinary innovation at Dunkin' Brands. "One of the flavor combinations we're most excited about is Mint Chip 'n Oreo Cookies, which is why we can't wait to offer guests a free sample of this festive milkshake on St. Patrick's Day."

Those looking for another way to celebrate St. Patrick's Day may purchase a St. Patrick's Day Cake, decorated with green icing, a vibrant rainbow and a pot of gold. Canton, Mass.-based Baskin-Robbins said it is also offering other sweet seasonal treats in March, including the March Flavor of the Month, Oreo 'n Caramel, which is made with salty caramel ice cream, Oreo cookie pieces and a caramel swirl. The flavor can be enjoyed in a cup, cone or blended into a milkshake or Cappuccino Blast. 

Additionally, Baskin-Robbins said it is introducing the new Bunny Stripe Cake, which will be hopping into stores nationwide just in time for Easter. This festive dessert features a classic chocolate bunny atop a pastel striped cake that can be customized with any ice cream flavor and white or chocolate cake.

Finally, ice cream lovers may celebrate the start of spring with Baskin-Robbins' "Celebrate 31" promotion. On Saturday, March 31, guests may enjoy all regular- and kids-sized scoops for $1.50 at participating locations. This promotion can be enjoyed on any flavor, including seasonal favorites such as Bananas Foster, Tax Crunch and Triple Grape Ice.