If fast food chains are making gravy from the fried chicken residue and oil ( this is the reason why I do not like gravy at restaurants). We can also make gravy every time we roast a chicken in the oven by using all the juice that dripped from the chicken, and here is how to do it.

Ingredients:
Chicken drippings( from roasted chicken) all of the residue/juices in the pan
2 cups water
1 tablespoon flour dissolved in a little water ( just enough to make it thick)
1/2 peice onion
salt and pepper to taste

Procedure:
1. Get the pan where you gathered the chicken juice during the roasting then scrape it and put in a pot.

2. Add onion and  water and boil it over medium heat, when it is boiling let simmer for 5 minutes.
3. Add the flour, salt and pepper, stir well to avoid developing lumps. Stir until thickens.
4.  Once thick turn off the heat, then drain the gravy to make sure that it's really smooth and you can use it as the dipping sauce of the roasted chicken.