8CWateruse as much as will fit in your slow cooker
Prep Veggies
3quartered yellow onionsQuartered + roasted (peel and all)
2carrotsChopped + include any carrot tops
4chopped stalks celery or unused celery bottoms
4halved garlic clovesHalved and roasted (peel and all)
1Cdried Mushroom stems
1Cchopped cauliflower cores
Prep Herbs and Spice
8sprigsfresh parsley leaves only
8sprigsfresh thymeleaves only
2dried bay leaves
1chopped leekgreen + white parts
1twhole peppercorns
2Tfat of your choicebutter, olive or coconut oil
1Cchopped parmesan cheese rinds
Instructions
Mise en Place
Put half the water into your slow cooker and set to high. Put on the lid. (Only after all the ingredients are added will to top off the water to fill up the pot. )
Put the oven on 400F and prepare and parchment lined baking sheet to roast veggies.
Gather all the ingredients and wash, slice, and measure.
Veggies first
Place the onions and garlic on a parchment lined baking sheet and sprinkle a little with salt and pepper. Put in the oven for ~30 minutes, until a little charred. Then take out of the oven and using tongs place each item into the slow cooker.
Put in all the rest of the veggies into the slow cooker.
Cook for ~4 hours, Do not stir for the veggies will slowly turn to mush, just leave in the pot. This is not to boil, just simmer.
Add herbs, spices, and sauces
Add all the herbs listed above.
Cook for another 4 hours.
Then strain through a fine mesh strainer or one with cheesecloth and you will be left with the broth. Rinse the soup pot and put the clean broth back in.
Finish
Now you taste the clean broth and add salt, pepper and some hot sauce or hot pepper flakes per your taste.
If it still does not taste they way you want, consider adding fish, tamari, or worcestershire sauce for increasing its umami.
Notes
Storage: Let the broth cool then put in a container and freeze. (The mash left over should be added to compost or disposed, because of the onions and garlic do not give to pets.)Do not add: What not to add for clear broth: broccoli, cabbage, Brussels sprouts, cauliflower, kale, rutabagas, and turnips. Artichokes, corn, potatoes, dried powdered herbs. These things are avoided because they can cloud up a clear broth. I also do not add salt, as I do not know what the broth will be cooked with so I leave that out. Some of the veggies have sodium already.Strong flavors that you can add to this broth to create specific dishes:1) Cauliflower is great for a soup when you let it cook long enough to disintegrate into the broth as part of a stew. But I do not use it to make a veggie broth.2) Potato or skins can be added as you make a soup to leach its nutrients into the broth, it will "fog" up the broth but that is ok for a soup.3) Kale, chard spines can be added again to leach nutrients into a soup.4) I do not add too many carrots to a broth as it can make the broth too sweet, however if I am making soup or a particular stew go ahead.