1st draft on the base for a sanity check by those with good memory.
aiming for 2.5L - 7 off portions:
veg oil 525ml (425ml reclaim before blending)
marg 10ml
onion 800g
garlic 30g
ginger 15g
tom puree 45ml
salt 17.5ml
paprika 15ml
turmeric 15ml
chilli pwdr 2.5ml (or 5ml if not the very hot stuff)
tin toms 400g
initial water 300ml
added water 600ml (after blending)
thinning water 600ml (at end)
spice ball:
cardamom 4 off (lightly crushed)
asian bay 4 off
anis 1 off
method: all in 2hrs simmer, reclaim oil, added water, blend, 2 hrs simmer, remove spice ball, add back cardamom, add thinning water