It was !! ( originally a 30 Onion base ) ;D
What i suggest is make the base as is, as you can freeze & use it for any curry you wish.
The final dish ....say you used only 1.5 liter base. You could halve all ingredients.. maybe Ive not done it.
But have found once i deviate too much from an original recipe it loses in translation. why i don't know, i think its back to the old margin for error factor, as my huge batches( dirty minds working here ;D) seem to all turn out ace.
Try it mate & see, let us know of your end result.
DARTHPHALL