Dairy Queen’s got twice as many stores, but Baskin-Robbins is still the country’s second-largest ice cream chain with around 2,500 outlets spread across the nation. And, naturally, when the chain known for its 31 flavors of ice cream noticed the smoothie craze building in 1997, it hopped right on board with it's own selection made from sherbet or vanilla fat-free frozen yogurt. In the stores, servers use a pineapple juice concentrate for this smoothie, but we can still get a great clone by using the more popular canned pineapple juice found in any supermarket. As for the peaches, you may want to let them thaw a bit and then chop them up so you can get a more accurate measure.

Source: Top Secret Recipes: Sodas, Smoothies, Spirits & Shakes by Todd Wilbur.