Hairy Berry Tribbles
Hairy Berry was a flavor of Tribbles cereal which, according to a commercial for the breakfast food, could be purchased and/or synthesized.
The mascot for the cereal resembled a cartoon female tribble with large lips, seeds on its body, and leaves on either side of its head. It also wore purple high-heeled shoes.
The other two flavors were Original Flavor and Spicy Ranch. (ST: "The Trouble with Edward", credit cookie)
The commercial was presented as a post-credits scene in "The Trouble with Edward". The context of the commercial from an in-universe perspective is impossible to determine, and may not have been meant to be taken literally.