I haven't had the time to revisit Undercover Curry's base, but that had fenugreek powder in
And it was a really good
But none of the takeaways I go to, use it
Thanks for your input, and not least for the good English as in saying 'really good' vs the inexcusable use of the expression 'real good'.
fenugreek leaves (rubbed between the palms), yes; fenugreek powder, no. But for me, a decided "yes" !
Perhaps it really is a trade secret, then, and it would be step too far for most BIRs to reveal all! i.e. they do use Fenugreek Powder but claim not to.
Something else I noticed down Brick Lane were stacks of tins/containers of Mustard Oil, all marked "for external use." They'd never stock or sell as much for anything other than cooking but, whilst households might be prepared to take a risk, you'd think it would be out of the question for BIRs with Environmental Health around.