Soups taste so much better this way. This broth is great in tomato sauce, curries, grits, and beans as well. You can make a big batch of this broth, use some, and freeze some until you need it.
No-Bones-About-It Vegetarian Broth
1 onion (roughly chopped)
2 tbsp. olive oil
4 ribs celery (keep leaves on)
2 bell peppers
2 roma tomatoes
full bulb of garlic (unpeeled -- remove the root end!)
parsley (a handful)
5 springs thyme
2 bay leaves
2 tbsp. white miso
palmful of whole black peppercorns
1 lemon, halved
Sauté the chopped onion in olive oil and on medium-high heat until it's translucent and starting to brown around the edges. In batches, process all the vegetables and garlic. Put all the veg and garlic, herbs, miso and pepper in, and then fill your soup pot with water to about 2 inches from the top. Squeeze the lemon halves into the pot and then drop them right in. Bring it all up to a boil. Simmer for 20 minutes. Let it cool and then strain out the veg. Return the liquid to the soup pot and reduce by half on medium-high heat. Season with salt to taste.
*A variation on this is to add 12 ounces roasted or dried mushrooms; this will make it more 'beefy' and savory.