Pete.
You can eat the base at home because it is not KD's but a close approximation of this ..
I bought some base sauce last week & it is exactly like the one below,but for the missing ingredient.
I'm almost convinced its a flavor enhancer (not MSG,tried that

) after some comparisons last week & Maggi liquid Seasoning added to the final dish indicates this theory is not far off.
This surprisingly doesn't need massive Pots & Pans, i use one Stew Pot (about 7" high 10" across) & a very average large Saucepan IE if you buy a Saucepan set it's the largest of the set.No Bath outside Ray? ;D.
BASE.As i make it.This recipe was given to me by my local.
Chop/Dice all veg..
15 Onions.
6 Tablespoon Vegetable Oil.( next time i do this i will use none !!).
2 """"""""""""""? Home made Fresh Ginger puree.
2 """"""""""""""? """""""""""""""""""? Garlic? """""".
3 """""""""""""" Curry powder ( Ive used Schwartz hot for 16 100% successful Curries !!).Not "The taste" but?best Curries Ive made.
3 """""""""""""" Turmeric.
1 """""""""""""" Extra hot chilli powder (You can substitute for just normal strength).
5/6 Carrots or 4 big ones (7"/8" is big).
3 Green Peppers.
5 Sticks Celery.
1 Tablespoon Salt.
2 Level Desertspoon Garam Masala.
20-30 stalks Fresh Coriander.
2 Heaped Tablespoons Sainsbury`s Italian Passata also used Lidle Passata (makes no difference).
Method.
Fry Garlic & Ginger until golden/brownish.
Add all spices & add some Water to stop becoming to sticky etc..(A Tomatoe Puree/paste texture should suffice).?
Add Onions,Carrots,Peppers,Celery,Coriander & Passata & simmer for 1 hour or until all ingredients are cooked .
Liquidize all ingredients.
Cook again for 10 minutes on medium heat.
Allow to cool & separate into approx .. Half liter portions (i use two jugs, put freezer bag in one & pour /serve with other to save making a mess).
When fully cooled you can freeze for months.
Members comment on how complicated my recipe is but if you read it through all you do is fry Garlic & Ginger add the Spices a bit of water & then all the veggies etc..& cook its just that there is a lot of various ingredients.
You can eat this base on its own & its lovely mmmmmmmmmmmm

You can make any Curry with this base if you leave out the Chili powder (another indication that its is very close to being 100% correct as a base gravy).
DARTH............
DARTH............