I can see me using this base going forward Andy. It will be interesting to do a direct comparison to the Zaal using identical timings measurements etc. I think i already know that this base is going to come out on top in terms of what i'm looking for based on my tastes which are like everybody else's, influenced by their experience of their own local favourite BIRs.
As for the tarka, couldn't agree more. I really did push the browning of the garlic but i do know when to stop and tipping it in to the base did that perfectly. And the washing of the tarka pan with the base just underlines you've just created a great canvas for experimentation in the kitchen

I added two large cloves and four baby cloves those in the middle that you avoid using till there nothing else. Next time i'm gonna go for six good average size or four large. I'm sure i short measured the garlic but i'll remedy that with the next batch which will be coming up real soon.