Nope, that is exactly what Mark gave me, and he cooks it all the time at home too for his family. Mark's UCB is, to use Darth's phraseology, a bit on the DarkSide; it is bland to taste cold but just bursts with flavour when you fuse it; it does need help with the more robust dishes. Bhuna is a plain dish so needs little in the way of spices. I have tried it and I think it is fine as does my wife (my co-cook in the biz) and she is a Bhuna fanatic. Well like we all say here try it and mess around with it; everthing can be improved.
Groundnut Oil: Sorry that was my mistake (I use it for home dishes), any good quality vegetable oil with a high temp rating, or Ghee will do. I use KTC or Wesson green for the biz cooking.
Happy Cooking
CP