Morning MM, yep that is a great topic and feel free to discus it on this thread if you wish as its a very interesting stage when cooking a base.
And a good point if it would be added or not to a base, Ali's base dose not but many do.
I have as you can guess also used most available base gravys in the past, but find when tempering the spice the flavour is not correct or me.
I'm on the fence about frying and browning the garlic, it produces a great depth of background but is not for every dish! Once it's in the base its permanent

this tarka IMO could be better added indervidualy to a curry as I have seen in many good restaurants.
The simplicity of base is something we all seem to struggle with, convincing our selfs there must be magic or many ingredients. I'm not in this camp I'm afraid and with my ongoing results my belief is base is just base! A way of adding liquid stock.
The Magic well that's just all in the cooking technique and in the way we use whole spice,mix powder,fenugreek,tomato pur