What is a craisin?

Blueberry craisin: dried blueberry is sold under the registered trademark of Ocean Spray. You could make your own dried blueberries by drying the blueberries in a food dehydrator. They would look a bit like raisins, but would be blue instead of black, and would taste more like blueberries than raisins. You can also buy dried blueberries, but the only time they would be called blueberry craisins would be under the Ocean Spray label.