Now revived from a curry lull by the ABC curry fest' week i've just had, i'm keen to crack on. I like the idea of the basics of this base but my main reason for trying this particular recipe is to try the reduction process. I have inadvertently done this in the past when making dopiza, more so becuase I have taken my eye of the pan only to return to find it over reduced. :

But have always enjoyed the result. Of course, I didn't start with base and then reduce as the this method does, I started in the usual way, frying of spices then adding base.
I do have a couple of question/thoughts though.
In consideration of the base itself, does anyone feel that the extra oil has an affect on the finished base (taste, cooking of spices etc.), other than to be used in the reduction process?
I ask because if there is no other effect, then surely you could perform the reduction process in the same way with any base by adding oil and base to the pan together in the final dish rather than in the base?