When cooking your turkey put 2-3 cups of chicken stock or water in the bottom of the pan. As the turkey cooks its juices marry with the stock or water to create a rich flavorful turkey stock. If you use chicken bouillon be sure to use low sodium.
While your turkey is cooking take the turkey neck and innards and place them in a stockpot with 5 cups of water, mirepoix (celery, onion and carrots), thyme, bay leaf, and peppercorns. Bring to a low simmer for two hours, strain and combine with juices from the cooked turkey. You should have around 6 cups of turkey stock once combined
Option 1: Using skillet add worcestershire sauce, bring to a boil and thicken with slurry (3tbs cornstarch mixed with 3tbs water). Stir in turkey stock to thicken for gravy.Adjust seasoning to your personal preference. This is a gluten free technique of thickening gravies and sauces.
Option 2: Melt butter in skillet over medium heat. Wisk in flour. Cook for 5-10 minutes stirring occasionally. Slowly add turkey stock to the roux stirring occasionally to avoid roux balls in your gravy.