I wonder whether we are being too coy about this?
Usually the questions people ask are designed to bring forth some secret
to BIR cooking we dont know but suspect lurks within the kitchens.
Maybe it would be better to just directly approach a BIR and tell them
what we are looking for, a certain taste/smell we cant recreate at home.
I bet you there are a lot of BIRs that will act surprised? - Personally I
dont think there is any secret ingredient. More likey there is a technique
plus a combination of spices which the BIR probably doesnt consider a secret
beyond anything else it creates in the kitchen.
Or there will be plenty of hushed tones, winks and flirtive movements
as if there is a big bag of secret spice locked insided a padlocked cupboard
with "Secret Ingredient" written on the outside - "Reveal on pain of Death"
But i doubt it. The only way forward is to keep asking those who
have direct contact with the world of the BIR. Describe what we are looking for
and ask how its achieved. swhat i think

Regards Ashes