First, put 3 tablespoons of vegetable oil in a big pot and heat it up. Then add your giblets. Sprinkle 1 teaspoon of poultry seasoning on them. Cook until they turn brown. This step is about adding flavor and cooking them a bit.
Now, add your chopped onion, minced garlic, and celery to the pot. Cook them with the giblets until they're soft. This step is about getting the veggies to release their flavors.
Pour in your chicken broth. Let everything in the pot cook until the giblets are soft. The broth will get all the good flavors from the giblets and veggies.
Take the giblets out of the pot. Chop them into small pieces and put them back in the pot. This makes sure they're the right size for your gravy.
This part thickens your gravy. In a separate pan, mix 3/4 cup of flour with 3/4 cup of vegetable oil. Cook it until it turns golden brown. This mixture is called a roux.
Now, slowly add your roux to the pot with the giblets. Stir it in well. This will start to thicken your gravy.
Turn the heat up and bring your gravy to a boil. It'll start to get thick. Keep stirring so it doesn’t stick or get lumpy.
Add your seasoning salt and a bit more poultry seasoning. Taste it. If you think it needs more flavor, add a little more seasoning.
Once your gravy is nice and thick, it's ready! Pour it into a bowl or a gravy boat. It's perfect for pouring over your meals.