Hi Tommy,
I'm about to make 40 curries for my grandson's 1st birthday party tomorrow, I've just made the base sauce.
I'm going to make 20 portions of Garlic Chilli Chicken, 10 portions of Chicken Korma, 10 portions of Chicken Tikka Masala and 20 portions of Brinjal Aloo Bhaji.
Whenever I make bulk, I usually use the same amount of G&G as I would normal portions, but when it comes to the spices about two thirds. i.e. for 1 portion 1 tsp curry powder, 1 tsp spice mix, 1 tsp chili etc, so for 20 portions I would use about 14 tsp of each, for 10 portions about 6 tsp, then make up with base sauce to your liking. I find this works well and then you could make a hot curry and a mild/medium one, or one creamy curry i.e. CTM and one Madras....
Hope this helps
