Third vindaloo last night equally as good as previous. I stuck with the same 2 tsp of extra hot chilli powder and was plenty hot for me but I do foresee a bash with an extra tsp as per Bruce's 'serious' vindaloo suggestion in my future.
Next dish will be something less spicy so the missis can try, but this base is a winner for me. The tip about adding a few slivers of onion or pepper to the cold pan with the oil, to know when the oil temp is right to start frying the spices was new to me and very useful. Haven't been this pleased with a homemade curry in a long time, and now should have some level of consistency and repeatability.
Robbo