1 chicken carcass*
To make your soup stock, simply take the leftover chicken carcass and the neck and throw them into a stock pot or dutch oven. Cut the carrots, celery, and parsnip in half or thirds, and throw them in the pot. Cut your bulb of garlic in half, crosswise, and toss it in the pot. Cut the onion into quarters, and toss it all in (no need to peel). Add the herbs and a teaspoon of whole peppercorns.
Cover all ingredients with water and simmer (don’t let it boil!) away on the stove for about four or five hours, or put an oven-proof cooking vessel into the oven at a very low temperature so the stock doesn’t boil. The reason you don’t want the stock to come to a boil is because your stock will be cloudy and not very appealing to look at. (If you don't care about the appearance - boil away!) Keep the temperature low enough (under 212 F or 100 C), and perhaps even use a thermometer to warn you if the temperature is getting too high.
Remove the carcass and veggies, and strain the stock into a bowl. Cover and refrigerate overnight. The next day, skim the fat off the top of the stock. Either use the stock within three days or put into containers and freeze for up to six months. With homemade stock, you’re getting superior quality soup stock with no preservatives. It tastes much better, and it’s better for you.
*If the chicken came with the neck, go ahead and throw that in the pot. An inexpensive way to save stock ingredients is to save the peelings, ends, and skins from carrots, celery, an onions – just start a large freezer bag of stock ingredients. When you make chicken, throw the extra bones or carcass in the freezer until you’re ready to use them. If you have leftover parsley sometime, chop it up and freeze it into ice cubes, so you can just toss the cubes into your stock, or any soup that you make.