The 'Adirondack Blue' is a potato variety with blue flesh and skin with a slight purple tint, released by Cornell University potato breeders Robert Plaisted, Ken Paddock, and Walter De Jong in 2003. The 'Adirondack' varieties are unusual because both the skin and the flesh are colored and have high levels of anthocyanins. This variety is good for boiling, baking, and mashing, and can be used for brightly colored salads. Unlike many blue potatoes, it does not turn grey after boiling. 'Adirondack Blue' was bred from N40-1 ('Chieftain' x 'Black Russian') x NY96 and is not under plant variety protection.