Replicated black hole
A black hole was a Ferengi drink that Jadzia Dax enjoyed having for breakfast. Curzon or Lela Dax was introduced to the black hole by a bartender she had known for 100 years. (DS9: "The Circle", "Playing God")
When Rom became a technician on Deep Space 9 in 2372, he told Quark that he had wiped his last table and mixed his last black hole. (DS9: "Bar Association")
The drink was ordered by another customer later that year. (DS9: "Hard Time")
Quark served Rionoj at least one black hole in 2370, but she declined another. In 2373, he offered the exhausted Kira Nerys a black hole, or a frosty Bajoran ale, but eventually brought her warm Enyak's milk to help get her sleep. (DS9: "The Homecoming", "Ties of Blood and Water")
The origin of this drink's name, according to the Star Trek Encyclopedia, 4th ed., vol. 1, p. 86, came from its opaque black color and its pungent odor.