Tamarin frost was a sweet beverage available in the Ten Forward lounge in the USS Enterprise-D.

While exhibiting the behavior of an android, Timothy ordered one during his visit to Ten Forward with Deanna Troi in 2368, conceding that although "androids" didn't need to eat or drink, they did like to taste things occasionally. (TNG: "Hero Worship")

According to the Star Trek Encyclopedia (3rd ed., p. 495), this beverage is called a "Tamarian" frost, however the script and subtitles clearly spell it "Tamarin."