A tulaberry was a blue fruit native to the Gamma Quadrant and the main ingredient in tulaberry wine.

In 2370, Grand Nagus Zek explained to Quark that tulaberries were the key to establishing a Ferengi presence inside the Gamma Quadrant and asked Quark to negotiate a contract for tulaberries with the Dosi. However, Zek later admitted that he was using the tulaberry trade to learn the secret of the Dominion, which he believed was the true key to profit in the Gamma Quadrant. (DS9: "Rules of Acquisition")

In 2378, when helping Seven of Nine decorate her holographic quarters, a holographic representation of Neelix suggested a Talaxian mosaic in tulaberry blue, with an orange inlay. (VOY: "Human Error")

A cut scene from "Ferengi Love Songs" would have established that tulaberries were grown in vineyards, and that Leck was considering investing in such vineyards on Seppus III.
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