Cooking Chickent/Broth In a large soup pot, add salt and pepper to a pot full of cold water, bay leaf, crushed peppercorns, parsley, and thyme. Watch for grayish foam or bubbles at the top. Use a fine mesh skimmer, spoon, or ladle to gently remove the oil/reminants on the top. Repeat every few minutes until the surface stays mostly clear. Cook chicken until done, remove chicken from the broth, and allow to cool. Strain the broth with cheesecloth/fine mesh strainer, and set aside. When the chicken is cool, remove the bones and skin, and shred the cooked chicken into bite-sized pieces. In a large pot, melt 5 tablespoons of butter and add the onion, carrot, and celery, 1 tsp thyme, 1 tsp parsley, salt, and pepper to taste. Sauté over medium-high heat until vegetables have softened, stirring frequently. Stir in 1/3 cup flour with the vegetables, mix well, cooking over medium heat, about 2 minutes. Add 2 cups of broth to the flour, blend well until no lumps. Bring soup to a low boil, stirring frequently, until soup thickens. Carefully pour the remaining chicken broth and mix until smooth as you bring it to a simmer on low heat. Cook for 1 to 2 hours on low; it may simmer, but not to a boil. Mound a serving of mashed potatoes onto the top of the chicken soup.