Black hole (beverage)
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. ()

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. ()

The drink was ordered by another customer later that year. ()

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. () 

de:Black Hole
fr:Trou noir (boisson)
Beverages