In a large pot, melt butter, and saute onions until translucentAdd chicken stock, bring the stock to a boil, and reduce to a simmer.Add chopped celery, carrots, and thyme.In a separate pot, boil one gallon of water with 2 Tablespoons of salt.Cook 1 pound package of wide egg noodles to al dente.Drain and chill with cold water to stop the cooking process.When the celery and carrots are tender to your liking, and any leftover vegetables that you will be using.Add the gravy a little at a time until you get the viscosity and flavor you want. It serves as a thickening and flavoring agent.Optional step: Combine cornstarch with 1/2 C water, and mix thoroughly until starch is completely dissolved and a slurry is formed. Bring broth to a boil, and add cornstarch slurry to the broth while stirring constantly for 3 minutes to cook the cornstarch and thicken the broth.Now, turn off the heat and add the turkey and noodles. Stir to mix the soup. Season with salt and pepper and/or more chicken base to taste.Serve immediately with toasted French bread or crackers, or toast slices of your French Bread Stuffing. Keep warm on the stove in the pot so people can help themselves. An enamel-coated cast iron pot works well for this. It will hold heat for a long time without the stove flame or heat source.