5 tablespoons butter
5 tablespoons all-purpose flour
4 cups milk
2 teaspoons salt
1 teaspoon freshly cracked black pepper
1/2 teaspoon freshly grated nutmeg
Heat the milk in a separate pan until just about to boil. Have it ready and keep hot.
In a medium saucepan, heat the butter over medium-low heat until melted. Add the flour and stir until smooth. Over medium heat, cook until the mixture turns a light, golden color, about 3-4 minutes, stirring with a whisk.
Add the hot milk to the butter mixture 1 cup at a time, whisking continuously until very smooth. Bring to a boil. Cook 10 minutes, stirring constantly, then remove from heat. Season with salt and nutmeg, and set aside until ready to use.