I chop by hand.
As I mentioned before, I'm pretty sure I did reduced quantity. I'll need to check my notes and get back to you. The onion gravy / paste has been suggested as being similar to a type of Bunjarra paste.
I remember years ago coming across a vendor at a popup street stall market selling solid blocks of instant curry pastes. He was demonstrating and giving taste samples. These were actually individual dish flavours for want of a better description. The spiced gravy for each dish had been reduced down to a form of being a solid block that was nearly dry and similar in texture to play dough or plasticine. It was just a matter of breaking off an amount and cooking it out adding oil, water and meat to create a curry. They were surprisingly good so I bought some but never saw anything like it ever again.