Make roux: Add butter (or beef drippings, if using) to sauce pan and heat over medium-high heat. Add flour and stir with a whisk to combine. Allow to cook for several minutes to slightly brown the flour.
Add wine: Pour wine into pan, whisk to combine, and allow to cook for 1-2 minutes to allow the alcohol to burn off.
Add remaining ingredients: Add remaining ingredients to the pan, stir to combine, and bring to a gentle simmer. Au jus is ready to serve now, or heat can be reduced to low for it to be served later.