Heat grease in medium-sized frying pan on medium-high heat.

Slowly whisk in flour to avoid lumps.

Once all flour is mixed in, slowly whisk in milk (about 1/2 cup at a time). Allow milk to get hot before adding more.

Once all milk is added, heat and whisk until gravy reaches desired thickness.

Salt and pepper to taste.

*Slowly whisk in more flour if too thin or more milk if too thick. I just eyeball the ingredients, but these measurements are really close. It took me a few tries years ago to get my gravy to perfection!