Blackberry is not technically a berry, but serves as one just fine in the non–scientific world of snacks. It looks a lot like raspberry, but is slightly larger, and much darker. It also looks similar to caviar, but is totally different.
Blackberry tastes great and is probably the top–tier of berry. Some find their many seeds cumbersome, while others embrace.
Blackberry became an official snack on June 18th 2012.