Place all ingredients into a 4 or 5 quart stockpot and bring to a boil. Reduce heat to a simmer, cover, and let cook for about 4 hours. Check seasoning and add salt if needed. You can also just omit it completely. Strain the stock through a piece of cheesecloth placed over a colander or large strainer on top of a large bowl. Let the stock cool completely, then either refrigerate or freeze until ready to use.