Hmmm Maybe some B5 references...
The Vorlon special (or Vorlon con quieso) : Served in an encounter plate because, trust us, no one wants to see what's inside!
Babylon 5 brand antacids : Your last, best hope for gastrointestinal peace (but don't get your hopes up!)
Zathras bites : (If you don't, he will!) (or something with "not the one!")
Whitestar washer (beverage) : You don't exactly know what it's made of, but whatever it is in fact made of, it looks like a plucked chicken.
Shadow enchilladas : Leftovers, from one thousand years ago.