For years we have been using Ghirardelli and Guittard chocolates. We are proud to add Peter's Chocolates to our list of ingredients. We fell in love with Peter's Bittersweet Chunks, with its very rich, chocolate flavor... in our opinion, possibly equal to the dark chocolates of Ghirardelli and Guittard. There are slight differences to a more discerning palette but we feel that we can get away with it when baked in a cookie or as a filling for our Oh Fudge Sandwiches. Please let us know if you taste a difference. We'd love to hear your opinions. So, the addition is due to pure,  basic economics. In order to give you the same product at the same price we had to look for a third source for chocolates. The price of chocolate dictates which brand we'll use. We hope you'll understand and keep enjoying our products.