Top-ranked recipe named "Au Jus"
After the roast is removed to a cutting board, add a teaspoon or two of flour to the roast pan and stir well. Add about 2 cups of water. Put over medium heat and stir together well. Scrape off all the “goodies” you can and reduce liquid to about 1/ 2 original volume. Season gravy with salt and pepper to taste. It will be very thin, but potent!