I've NEVER seen this quest pop up for the cooking dailies in Dalaran. I don't do them every day, but I do check them near enough every day if I've got time, purely just for this quest.

It's the only one I need to complete the achievement, and I've never seen it. Is it just bad luck, or is there something special I need to be doing?

There are two other high level cooks in my guild and they've never seen it either.

Edit: Whoops. Probably should have put this in the quests/professions forums or something. Never mind, eh!

Just random bad luck i guess - personally i see this one more than i get any other. Just how the dice falls i guess.

Indeed a matter of "luck". I've personally had that one two or more days in a row quite a few times.

You're bound to get it one of these days.

Myself I've been getting this daily last 2 weeks like 50% of the time.
There is not only bad things about RNG :)

Wanna switch? That one is pretty much the only one I get.

That's very unlucky for you it's been the daily here for 1-2 weeks would love to trade with you

On our server, the master chef must be seeing the offhand vendor, given how often it's meatloaf daily.