many thanks CA/Chewytikka,
i shows what i suspected that i clearly don't know enough about tarka.
i did not know of the 2 types or categories yet i believe i use both ie i fry the spices at the start and i also use bunjarra at the end (although i seem to have a growing preference to add earlier ie just before the base).
it's the 1st type that i have particular interest in. i now suspect that BIR's have a pot of garlic/ginger paste and also a pot of garlic paste. the use being dependent on the dish.
i have no proof of this only the observation of leaving the ginger out and trying the garlic only in a few dishes.
the question is does anyone else suspect this. as a very loose general rule i think the g/g would go in hot fry dishes and the g only in "cream" dishes.
in short i've only used g/g paste to date and now i think i also need garlic paste on it's own too.