This one didn't go so well and I'm sure it is because of my experiments and not because of this recipe itself, which I have cooked before with great success.
I followed CBM's recipe with only a few changes at the end, where I added 1 tsp ghee and 1 hpd tsp of mr. naga. Another thing I did differently, was the use of the 2nd mix powder in the book which I have never used before and due to a bit of ghee's flavour and heat overpowering the dish, it was not possible to tell how much I like it.
Possible reasons for the failure:
* Addition of mr. naga which I've not used before (and honestly couldn't tell anything out of)
* The addition of butter ghee at the end
* The mix powder #2 off of CBM's book, which I have never used before
* Too much reduction caused by the fact that I forgot to chop coriander and was doing it at the end
* Frozen tikka defrosted on microwave using Blade's recipe
My gut feeling is that extra reduction along with butter ghee caused the dish to be quite below my expectations. It was edible, but not quite interesting. On the contrary, the looks are not quite bad, as far as I can tell :

