Created by horticulturist Rudolph Boysen in 1923 by crossing a raspberry, blackberry, and a loganberry. The Boysenberry is shaped like a large raspberry and has a rich sweet-tart flavor.
A boysenberry is a cross between a European Raspberry (Rubus idaeus), a Common Blackberry (Rubus fruticosus), and a Loganberry (Rubus × loganobaccus).
It is a large 8.0g/0.28oz aggregate fruit, with large seeds and a deep maroon color, which changes to the typical boysenberry color when the fruit is cooked and made into jam and pies.
Boysenberries are principally used in jams, syrups, preserves and some desserts, as well as sold fresh, in season, used for home-made pies. Though grown commercially, the boysenberry is not used as widely as its cousins, the raspberry.