salt (I do not add salt now, but prefer to salt to taste when using in a recipe)
Use a 6-quart slow cooker. This is a "free" recipe! When cooking, save your vegetable ends and peels.
Many people have a large Tupperware container in their freezer that they use for just this purpose. In order for this to be safe, you'll need to wash your vegetables well and scrub off all of the dirt. I'd highly highly highly (three highlies!) recommend using certified organic produce when making broth/stock---or better yet, organic vegetables that you've grown in your own garden.
Some great veggie-broth-making candidates are: carrot peels, onion skin, celery ends, bell pepper stems, and garlic skins. Don't bother with potato skin, it's too starchy and has an overwhelming earthy (dirt) flavor.
Put the (washed) vegetable skins and pieces into your slow cooker and add a bunch of water. I don't measure, I just make sure the skins and pieces are submerged (you may need to poke them down a bit with a wooden spoon). Cover and cook on low for 10 to 12 hours. Place a colander in a large stock pot, and carefully strain the vegetable pieces from your broth.
Cool completely and freeze in containers until you are ready to use in your favorite recipe.
Cream of Chicken Soup Makes approximately 1 can 1 C chicken broth1/2 C finely diced onions (I use minced) 1/2 C milk 1 T cornstarch
In a saucepan, bring chicken broth and onions to a boil. Mix 1/2 c milk with cornstarch until well mixed, and add to the boiling mixture, stirring frequently until thick (about 1 minute). Season with salt and pepper, if desired.