5) when you say "stocks" I wonder, could it be some sort of soup?

0) A common substance of physical reality.
1) Salt - No. But edible.
2) Does "0) A common substance of physical reality" imply that it is neither Animal, nor Vegetable, nor Mineral? - No implication but vegetable and animal, with no mineral as far as I am aware.
3) Is it a liquid? Hot in its most common aspect. It becomes tacky at body temperature and melts before 373K, sorry, 100C.
4) Do you own any? Not right now, although I often have temporary stocks.
5) when you say "stocks" I wonder, could it be some sort of soup? I have not heard/read/dreamed of this being either a complete or even partial component of a soup, but then the multiverse is wider than my dreams. It is often consumed as part of a drink, or even composes the entire drink, but is more often consumed in a more solid form.

Hotter hotter chocolotter

Congratulations!!! It is indeed chocolate in its 'many worlds' presentation.

0) OK It's almost wholly mineral

Is it edible?

1) Hello Skiddy! Not normally edible but not normally poisonous.

Is it chalk? My teacher used to eat his chalk - when he wasn't throwing it at his pupils. To clarify, that's pupils as in children not as in throwing at his own eyes.

"I don't make jokes. I just watch the government and report the facts." - Will Rogers

Not normally edible and not necessarily poisonous: Is it somebody's ear bitten off in a 'sporting' contest?

1) not normally edible by humans unless death is imminent

2) Hello Sir Fflint are you a new boy? Not chalk but I like it.

3) Cannibalism raises its ugly head again. Not an ear, not even cauliflower flavour.

1) not normally edible by humans unless death is imminent

2) Hello Sir Fflint are you a new boy? Not chalk but I like it.

3) Cannibalism raises its ugly head again. Not an ear, not even cauliflower flavour.

Mineral, not edible but not poisonous. Hmmm
Is it sand?

4) Not sand but invariably found at the British seaside

Now I have to work out how a drunken hen party is mineral. (Not a guess, just a writing down thoughts.)

As memory serves there were jellyfish (at the British seaside), more rocks than sand and rock (of the lettered variety) You don't mean that kind of rock do you? (yep, new gal (masquerading as boy))

5) Hmm things seem to be getting a bit hard. Not rock of any kind.

0) OK It's almost wholly mineral
1) Is it edible? Not normally edible by humans unless death is imminent
2) Is it chalk? Not chalk but I like it.
3) Is it somebody's ear bitten off in a 'sporting' contest? Not an ear, not even cauliflower flavour.
4) Is it sand? Not sand but invariably found at the British seaside
5) Is it Brighton Rock? Not rock of any kind.
6) Is it normally found indoors?

6) not normally found indoors unless you live in a hovel or are a member of cash-strapped aristocracy.

Flies although not regularly regarded as mineral or edible were certainly favoured by Renfield.

Is it a sea-shell?