Thanks again Chewy.
I have noticed that too. i started cooking yesterday, and I did add more water to the base as I went along, as the curries were really thickening up very quickly. I reckon I got a good 6 litres out of this last batch. I cooked 9 curries yesterday. i have just cooked a triple version of korma, and I have put enough for 12 more curries in containers in the freezer.
Really happy with the results.

Curry is tasty and the right consistency.