Yes that is correct,when i make the actual Curry i use 3 500ml portions which will give you a large pot of Curry i generally get 8-9 home sized portions from this,(home sized portions down here are twice the size of normal Take-away portions).
Also i cook all my Curries in this large format & now i don't get the odd uncertain "bad" Curries like i have in the past following 1-2 portion recipes.
Hope this helps anything else ,just ask.

It is very convenient to make Curries in this way as i freeze them all & they keep for months & taste Bloody marvelous