Remember what happened to the Hindenburg?
Why, was it inflated with curried cabbage 'gas'? Hmmm, maybe I should cut back a bit more, then. 
i was gonna have curry tonight
V....it ain't the curry, mate...it's the cabbage.
Yup, curry on its own is orright... cabbage on its own is, well so, so.... it's only when you combine them. 
Oh, almost forgot... when you add dairy (like sour cream and/or yoghurt) to the recipe... seems to add more oomph to the 'bark'.
