1/4 cup bacon grease
1/3 cup all purpose flour
2 1/2 cups milk
1 tablespoon coarsely ground black pepper, plus more to taste
Kosher salt, to taste
Heat bacon grease in medium saucepan over medium heat until shimmering. Add in flour and whisk constantly until mixture turns light brown, about 1 minute.
Slowly whisk in milk. Stir in pepper and bring to a boil. Reduce to a simmer and cook until slightly thickened, about 4 minutes, stirring occasionally. Remove from heat; season with salt and additional pepper to taste. Use immediately on chicken fried steak, fried chicken, mashed potatoes, or biscuits.