Has anyone tried Red onions
I know they are dearer and probably not used in BIR
But in the book Rasoi by Vineet Bhatia (he ownes a Michelin star Restaurant in Chelsea)
He has a page on Pastes and Bases
He says he chops the onions and sweats them until they turn pink
now he doesn't say red onions but I cant think of any other onions he could be using unless a bit of food colouring ;D
But it does cross my mind when i see big sacks of red onions also in tooting( could be the missing ingredient

Just a thought
Michael