Mix flour and liquid together in a separate container and stir with whisk until no lumps remain.
Add flour/liquid mixture to pan with pan drippings and turn heat to medium.
Stir constantly, making sure to scrape bottom and sides of pan to incorporate all pan drippings. Stir in salt and pepper to taste.
When gravy is thickened reduce heat to keep warm or turn heat off and reheat at serving time.
Using the proportions of 1 cup liquid to 2 Tablespoons of flour will yield perfect results and can be adjusted according to how much gravy you want to make. Note: Chicken stock was just in nutritional information and using water, milk or broth would change nutritional values. Pan Drippings were not included in nutritional facts.