The very best prime rib au jus is an important part of serving an amazing prime rib dinner for your Chirstmas dinner or holiday meals! This incredibly flavorful beef sauce is easy to make - just as easy as starting with a store-bought packet!
Bring mixture to a boil, then reduce heat to a low simmer. Simmer uncovered for 15 minutes as the jus will reduce and concentrate the flavors.
Taste and adjust seasoning.
salt & pepper (to taste)
Remove from heat and serve. Or allow to cool completely and store for later.
To Make Prime Rib Gravy (optional)
Add the drippings (or butter) to a sauce pan. Melt over medium-high heat, add the flour and whisk until fully blended.
½ cup prime rib beef drippings, 2 tablespoon all-purpose flour
Pour in the first ½ cup of beef stock, add the beef broth paste, and optional Worcestershire sauce. Whisk very well, no clumps should be in the gravy. Once combined, pour in the remaining 1 ½ cups of beef broth and whisk until smooth again.