I tried bb1's base last weekend and have used it to make four curries so far. I did not make the base exactly to the recipe. I scaled it all down to 5kg of onions and only used 1l of oil. I live within 20 mins of bb1's takeaway and can confirm that the finished curries are exactly what you would expect from most takeaways in this neck of the woods. I did not use bb1's pre cooked chicken, I did what I always do, I pre cook whole breasts in the base sauce for 40 min, remove from base, chop up then used. I also did not use green chilli paste, I used regular chilli powder.
I made chasni with lemon juice, sugar, cream and chewytikka's tikka.
I made garlic chilli chicken with bb1's regular curry ingredients plus chilli powder, chopped green chilli, chopped fresh garlic and a pinch of sugar.
I made curry sauce to go with some tandoori chicken exactly to bb1's method plus a bit more methi sprinkled in at end.
I made a Bhuna with the curry recipe plus half a tomato cut into 3, an extra tspn tomato pur?e, a black cardamom, cooked longer to thicken sauce slightly and an extra pinch of methi near end of cooking.
All the curries were indistinguishable from local takeaway versions.
I will also comment that I have eaten curries in Glasgow, Edinburgh, Dundee, aberdeen, Inverness, fort William, Warrington, Bradford, mine head, Glastonbury and Manchester. Everywhere I have been the curries have been different, similar but different. Obviously I prefer the Glasgow taste because that's what I was raised on.
Why people here are getting their knickers in a twist over this base is beyond me.