Livo - I would also love to hear your naan secrets.
I was not happy with what I felt was the severe metallic / chemical after-taste associated with what I considered excessive baking powder in the popular favourite naan recipe and technique. A now non-contributing member shared a few pointers with me in private including a private video. As he hasn't published this information, I didn't feel I should and still don't.
What I will say publicly is this; the recipe I was shown was described as UK genuine, Deluxe Naan. Not a standard naan. It is full dairy (not water), contains egg, uses self raising flour plus fresh yeast and no baking powder. I have not used fresh yeast but dried instant and much preferred it to the popular favourite. No after-taste.
One day I will source fresh yeast to try it I hope. The full recipe is nothing you wouldn't expect. There is more than one dairy product but nothing you haven't see before. Anybody understanding Bakers percentages and dough consistency will be able to deduce a similar naan from this information. It isn't really a secret recipe but it isn't mine and I was given it in private. I respect this and out of this respect, I won't write it verbatim on the public forum.
Of course cooking in a tandoor makes a considerable difference as well, albeit that the tawa technique is convenient.
The same member also told me what any BIR chef would list as the ingredients in a normal BIR naan, if asked. Surprisingly simple.
I also highly rate the School of Artisan Food naan. It is different to the UK deluxe naan but just as good in my opinion.