[mitmondol]

Well, you wanted authentic.
Fenugreek would not be that. Like Recipezaar's recipe would not be that either...
That special taste comes from the method of cooking and the combination of the meat and the tzaziki.
But hey, it's your dish, you can make it however you want to!
I was just trying to give you the authentic stuff.
Check with Greek people and you'll see.