Yes, of course you can buy your veggie stock at the organic grocery, it's ok if you do that. It's even ok if you buy your usual Maggi, Knorr - whatever the brand is called - veggie stock.
Just make sure you avoid Glutamate and other enhancers... I promise, this will be the difficult part!
With this homemade granulated veggie stock YOU can define the taste and - what's more important you can be sure about the ingredients.
I admit, it's quite time consuming, but it's worth it.
To start you have to buy quite large amounts of vegetables - huge amounts even...
My ingredients are:
carrots, yellow turnip, celery, parsnip, leek, onion, laurel, parsley (lots of), lovage (even more)
Chop all the ingredients as small as you can. Or put them in a cutter, slice them as thin as you can- whatever is easiest for you.
Put them on a baking tray (with baking paper) and spread them ---not to thick.
Pre-heat the oven to 50°C (=122F) max. 70°C and put the tray in - leave the door open a bit so the humidity can evaporate. Depending on How large your oven is, you can put several trays to dry. This will take some hours. Turn the veggies now and then and take them out when the are fully dried. The put the dried veggies in you mixer (I use a nutribullet) and shred them to powder.
Repeat that until all your veggies are dried. Then put the powder back in the oven to make sure, the last bit of humidity is gone. Add salt (sea salt, un-iodized ore stone-salt)
This is also a nice present!!! Simply fill the ready-made granulated veggie-stock in pretty glasses (no, that won't work with a glass of vegemite or Maggi-veggie stock :D )
#eatshitfu%!