If using old pan drippings, heat the pan drippings in a heavy bottom skillet over medium-to-medium high heat.
Once pan drippings are hot, add in the flour and whisk continuously so the flour does not burn. Keep whisking, and cook until the flour change colors to a medium brown, about 2 minutes. You can also start to smell the flour cooking when it’s ready.
Slowly pour in the broth, while whisking continuously. At first everything will separate, but keep whisking making sure to stir the entire skillet.
Continue cooking and whisking, until gravy thickens, about 3 to 4 minutes.
Season with salt and pepper, to taste, and serve immediately.
