OK, the scaling issue I can certainly understand, and I do appreciate that if you /like/ your mix powder then you will be inclined to use it even if the recipe calls for something different (as I use Bassar Curry Masala). But if you want to achieve what Kris has created, then I think you have little option but to use her spicing : you could, after all, make up a "mix powder" unique to this dish, but scaled for 3 to 6 portions, and then just use it pro rata. In fact, if you habitually make a number of dishes, it may be worth your while making up individual "mix powders" for each. But in the meantime, if you want to share your restaurant chef's "mix powder" recipe with the rest of us, I for one would be very interested.
** Phil.