I'm using the remains of the Xmas turkey to make stock. Firstly, I only have onion & carrot (as well as the usual herbs/spices) - you're always told to put celery in stock but it will be ok without that, won't it?
Secondly, all recipes I've ever used have a litre or two of water but that doesn't even slightly cover my turkey carcass. I think it's better to cover the turkey entirely (so that all the flavour from the turkey will go into the water) and then just reduce it down afterwards, yes? Would you agree that would be the same as using less water in the first place?