Hi Daz,
In short we dont know, it was Ghannas recipe and she mysteriously disappeared from the forum a while ago, heres my best guestimate
Assuming this is a portion for 2
Curry gravy - probably 1 ladle, normally for 2 you'd add 2 (depending on ladle size), but with this recipe there is plenty of other fluid
Evaporated milk - Hmm about 4 TBSP I reckon
Creamed coconut - About 1 TBSP (maybe 2)
Any kind of nuts ( some use cashwnut ,some use Almonds, Some use a kind of nut similar to hazelnut ) - 2 TBSP ground almonds
Pre-cooked chicken ,meat ,prawns ,or defrosted vegtables . - Up to you ;D