【How-to】Are blueberries supposed to be blue inside

Yes, blueberries are the only blue fruit. … If we use the color blue loosely, and include those that are purplish-colored, too, that list gets a lot longer: “Blue” fruits include blackberries, blueberries, black currants, elderberries, purple figs, purple grapes, black olives, plums, dried plums and raisins.