For chicken stock: Place chicken carcass inside your pot and add 2 gallons cold water. Add salt. Place on medium high heat and bring to just under a boil. Once to the point of boiling, immediately reduce heat to a simmer. Skim off any impurities that have floated to the top of your stock. Simmer for 1 ½ hours. Gently add mirepoix and bouquet garni. Do not stir them in. Simmer for 1 hour.
Remove from heat and ladle stock through the strainer lined with cheesecloth. Discard carcass, mirapoix, and bouquet garni.
For chicken noodle soup: Place a soup pot over medium heat and coat with the oil. Add the onion, garlic, carrots, celery, thyme and bay leaf. Cook and stir for about 6 minutes, until the vegetables are softened but not browned. Pour in the chicken stock and bring the liquid to a boil. Add the noodles and simmer for 5 minutes until tender. Fold in the chicken, and continue to simmer for another couple of minutes to heat through; season with salt and pepper. Sprinkle with chopped parsley before serving.
Use or chill immediately. If storing, once the soup has chilled, use ice cube trays or re-sealable plastic bags to freeze for later use. Stock can be stored in the freezer for up to 2 weeks.
Do not add the mirepoix and bouquet garni too early as you might "overcook" them. This will give the stock an undesired vegetable flavor.
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