Garp... stop sniping.
Well said RS ;D ;D
You were on the right path Professor JM
Ground Fenugreek seed is a secondary spice in Traditional Indian cooking.
and has little use in BIR cooking and further more freshly ground seeds gives off hardly any aroma at all.
To say it is the essence of BIR curry is simply rubbish. :

The Fenugreek seed powder is a strong bitter spice so use it sparingly, too much will ruin a curry
and also give you gas and possibly the runs. whoopdeedoo! ;D ;D
On the other hand many authentic BIR/TA recipes call for Kasuri Methi, (dried Fenugreek leaf)
which is why its part of the chef's worktop (mise en place) spices.
Kasuri Methi used to be added to the majority of savoury curry dishes.
But not so much now in The Modern BIR's, because its overpowering,
but it is still a major part of the aroma of BIR, new and old.
Getting back to Cumin, it is a primary spice and is the culprit for Pakistani Restaurant
curries often having that same background flavour, across the range of their dishes.
Grinding your own spice masala is much fresher, obviously, but you have to moderate
your recipe as its always too pungent for the English palate.
My two pennies in, hope it helps
cheers Chewy