Peppermint bark is a chocolate confection. Generally it consists of peppermint candy pieces, such as candy canes, in white chocolate on top of dark chocolate, but peppermint bark can refer to any chocolate with peppermint candy pieces in it.
It is especially popular around the Christmas season. Companies known for selling it seasonally include Williams Sonoma, Ghirardelli, and Dove. Though they do not label it as peppermint bark, Hershey's also sells peppermint Hershey's kisses.
In the United States, peppermint bark is also sold by some Girl Scout troops as part of an expanded range of items other than cookies. Jelly Belly also sells a combination of its dark chocolate and candy cane jelly beans as a "Peppermint Bark Recipe Mix".