I made the vindaloo last night almost to spec (no potatoes). It produced a really good dish.
I've been convinced that jar bought minced ginger had a funny after-taste and this recipe gave me an excuse to miss it out. I don't know if I'll use it again it was better without. Apart from that it's almost identical to my own recipe.
Hi Fried, your correct in what your saying about adapting as most BIR recipes have evolved from one standard template! Different businesses just make a small adjustment, this can bring a big change in a dish.
We all adapt and tweak dishes to suit our pallet, this is a good thing and the advantage of the home chef.
It's just great that we all have this passion for cooking.
In the past I have used shop brought G+G paste, I also experienced the tang you have mentioned. My only advice is to try cooking out the G+G for longer and make sure it's fresh ginger.