Whenever I pan fry any type of red meat, I save the drippings in a jar in my fridge. That way, when the beef gravy craving hits, it only takes a few minutes to prepare and cook. You can also store extra Low-Carb gravy in the refrigerator for up to 2 weeks.
If you are refrigerating for future use, you may need to slowly add more beef broth to thin it slightly as it warms up on the stove.
Find it online: https://www.carbsmart.com/beef-gravy-low-carb-recipe.html