Cheers guys, I'll wait till I've plugged through this current batch of base sauce (which is probably about 7 litres in my 8 litre stockpot) and will then take a view on whether I really need to make bigger batches.
I've just finished the blending stage (5 loads for my poor old jug blender) and have the blended base coming back up to the boil on the hob. I'm leaving the lid off at this stage to let it reduce a bit, it all helps with the storage.
Q which is doubtless OT for this thread, Panpots Ashoka recipe doesn't mention skimming the base sauce while it simmers, but I remember Kris Dhillon used to insist this was important. Do you skim your base or not?