this sounds like a really good recipe,i like the simplicity of it.

just a couple of questions....do spanish onions really make a difference??my local bir uses normal ones,so i assume its more a matter of taste....also...would love to hear any more tips that you might have(or if you have have the time,acquire from your friend in the takeaway

) as to the whole prepartion thing...how long do they keep the base sauce for for it to mature properly,or can it be used straight away etc?? also,do they cook the curry at the final stage at full heat(gas-wise) as seems to be the case with some birs??
thanx for the recipe anyway..gonna try it soon..

ps oh y..so you really dont add ANY liquid whatsoever to the onion puree whilst heating it in the first stage???