De’vID:

> "Drak doo" could be some kind of Klingon dialect for {DaH yIDIl}.

 

At the time I thought this was meant to be Paramount Hol for “Bon appetit!” 

 

In “Conversational Klingon” though, after bringing the hapless Terran tourist to Kronos “dinner number three” (qagh and pipius claw), the waitress told him:

 

  yISop, tera'ngan
  Bon appetit, Terran. ["Eat (it), Terran!"] CK

I take the yISop / bon appetit of CK to be a bit of tourist humor. The Klingon is saying Eat! as in, "I brought you this food, now you better eat it!" The translation is trying to make it sound polite, something a tourist would hear in a high-class restaurant on Earth.

So the Klingon chef in DS9 could be saying anything. There's nothing saying it isn't the actual Klingon equivalent of bon appetit, though it could just as easily mean "Next customer!"

-- 
SuStel
http://trimboli.name