Motivated by laziness (as always) I tried something different this time...
Onions, garlic, ginger, chilli and some water into a blender.
Some oil in the pan and in went blended mixture along with a shed load of spices and....the raw chicken (hence the pre-blending)
. I can report that the spices adequately masked the odour of which I've previously complained. Thanks for the suggestion! Fwiw, after 3/4 hr I then threw in some blended tomatoes and cooked for another 1/4 hr. Added it to pan with another instalment of spices etc. and it was OK. But I'm still finding that cooking one-offs the result is better. I'm wondering whether it's all these fancy pastes I've seen used that make the difference in a BIR because the stewed out flavours of the base never seem to add anything much for me other than convenience in cooking large quantities of onions, garlic and ginger.
I do realise this heresy is based on complete ignorance and a fair amount of incompetence. ;D But for the time being I'll just be trying bases every now and then in the spirit of experiment.
Onions, garlic, ginger, chilli and some water into a blender.
Some oil in the pan and in went blended mixture along with a shed load of spices and....the raw chicken (hence the pre-blending)
. I can report that the spices adequately masked the odour of which I've previously complained. Thanks for the suggestion! Fwiw, after 3/4 hr I then threw in some blended tomatoes and cooked for another 1/4 hr. Added it to pan with another instalment of spices etc. and it was OK. But I'm still finding that cooking one-offs the result is better. I'm wondering whether it's all these fancy pastes I've seen used that make the difference in a BIR because the stewed out flavours of the base never seem to add anything much for me other than convenience in cooking large quantities of onions, garlic and ginger. I do realise this heresy is based on complete ignorance and a fair amount of incompetence. ;D But for the time being I'll just be trying bases every now and then in the spirit of experiment.

Is it supposed to do this if you boil rather than fry it? I've never detected anything remotely like this smell and flavour in BIR CTM.