I persevered with this base (in an attempt to give it the utmost benefit of doubt) and made a chicken vindaloo.
However, I used the base, as I would use any other base, to make the vindaloo. The exception was that I did not add any more salt, or oil, for the preparation of the final dish.
But I did add (despite BB1's suggestions):
- tomato paste/puree
- pureed garlic and ginger
- "spice mix"
- chili powder
- dried fenugreek leaves
- fresh coriander
I added all (or most of) the ingredients to a dry pan and heated them, on high heat, for a about 5 minutes minutes.
I also added BB1's precooked chicken with the spices.
Here is a photo of the result:

All in all, it produced a very paletable BIR-like chicken vindaloo. But I do feel that it was still a little too greasy on the palate.
It seems to me that you have to play with this base (and the precooked chicken mix) to match the final dish cooking. But, as it stands, I think the final dish recipes (ingredients and cooking times) are not particularly in accord with a good (BIR-like) final dish.
I will add that I do resent insinuations (yawn :

) that I am a major cause of BB1's departure from this site. BB1 made many noises, to that effect, well before I made a single post. Those that suggest that I was a major reason for his departure must clearly ask themselves where the paranoia really lies :

And, anyway, that's their choice.
Given the angst on the forum, nowadays, I will leave it at that.
But, by all means, try this base - or the subsequent variations! - and see what you think.
