I used to save the pre-cooked chicken liquor in a reduced form as, like others, it seemed sacrilege just to punt it. It certainly enriched any subsequent dish I used it in, but always to the detriment of the intended flavour and style of the dish.
It also thickened the gravy too quickly, which made a difference to the final stages of reduction.
Eventually, I stopped doing it as was interfering too much with my curries.
I could see the liquor/stock being used in particular restaurant applications, or to enhance water-based gravies in traditional cooking, but my personal experience mitigates against its used in run-of-the-mill BIR cooking.
Not that my BIR cooking is at all run-of-the-mil!
