Make the broth by filling a stock pot 3/4 full of water.
Add chopped onion, celery, & parsley to the pot with plenty of cracked black pepper & kosher salt.
Add the turkey neck and giblets. Bring to a boil, then drop to a simmer for at least 1 hour.
Use a colander to strain the broth and save in the refrigerator until the day of Thanksgiving. ( I do this the night before Thanksgiving)
In a pot, sauté 1/ 2 stick of butter & chopped onion with salt & pepper until translucent.
Add the chopped garlic and another 1/2 stick of butter & saute until fragrant.
Add garlic powder and stir.
Add the flour and whisk continuously at least 5 minutes on medium-low heat.
Add all of the turkey drippings from the bottom of the roasting pan and whisk nonstop another 5 minutes or so. (medium heat).
Once that’s combined start slowly adding the turkey broth and whisking.
Once it’s at a consistency you like, bring to a boil & add the Worcestershire & Gravy master.
Let it boil and lower to a simmer for 20-25 minutes. add more broth and salt and pepper as needed. Happy Thanksgiving!