Baskin-Robbins announces Polka Dot Cake and Elegant Rosette Cake just in time for Mother's Day CANTON, Mass., 2017-May-03 — /EPR Retail News/ — Baskin-Robbins, the world’s largest chain of specialty ice cream shops, is excited to celebrate moms of all styles with the new Polka Dot Cake and the returning Elegant Rosette Cake. The Polka Dot…