"Concentrated lamb stock (66%)(water, lamb)" is hardly "ultra-processed junk", dear boy ...  If you look at the ingredient list again, tell me honestly what fraction you identify as "ultra-processed junk".
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** Phil.

As you're making stock anyway how about just adding the usual garam masala items such as cardamom, cinnamon, cloves etc. to Indian-spice the stock. Not really sure what you're after as adding anything more would make it a curry sauce rather than a gravy.

Just found this page and it looks interesting. Maybe a modified one of those gravies would suit?  https://setupmyhotel.com/hotel-staff-training/kitchen-staff-training/basic-indian-curries-and-gravy-list-standard-recipe-hotels-chef/

I got a box of the Shan Memoni Phil.  Ingredients look fairly similar to the Pilau Biryani. Dill in the Memoni though.  I like Dill.  Looking forward to giving it a go.  Good shout on the Shan spices.  Recall seeing an open box in one of the desi Pakistani places (kitchen) in Birmingham many years ago.  I bet they are all using it.

Rob

I must admit, I was not particularly impressed when I tried Kallo, but to answer my own question in re Knorr stock pots :

Ingredients:

   Concentrated lamb stock (66%)(water, lamb),
   salt,
   palm fat,
   sugar,
   yeast extract,
   flavour mix [flavourings, flavour enhancers (monosodium glutamate, disodium inosinate, disodium guanylate)],
   potassium chloride,
   gelling agents (xanthan gum, locust bean gum),
   garlic,
   herbs (rosemary†, thyme†, parsley†),
   carrots†,
   sunflower oil,
   onion juice concentrate†,
   caramel syrup,
   maltodextrin,
   parsley roots†.

† Sustainably grown

Looks pretty good to me ...
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** Phil.

Could you do the same for Knorr stock pots, Santa, without which I cook virtually nothing (including cull yaw biriani) savoury at all ...

I daren't Phil. I use the Knorr stock cubes and I know they're not going to be full of anything much better than the Calnort ones. But I would recommend Kallo stock cubes and in particular the chicken ones which are, for me anyway, the best flavoured stock cubes. And the ingredient list doesn't stop my heart just by reading it.

Ingredients:
Sea salt, potato starch*, sustainable palm fat *, sugar*, chicken fat* (3.5%), yeast extract*,  natural chicken flavour, chicken powder (1%), spices* and herbs* (turmeric*, black pepper*, parsley*, rosemary*), onion*, *Organic ingredient

Allergen Advice: May contain celery