Prepare the Cornstarch Slurry: In a small bowl, whisk together cornstarch and cold water until completely smooth and lump-free.
Heat the Beef Broth: In a saucepan over medium heat, bring the beef broth to a simmer.
Whisk in the Slurry: Gradually whisk the cornstarch slurry into the simmering beef broth.
Simmer and Thicken: Reduce the heat to low and simmer the gravy, whisking occasionally, until it reaches your desired consistency.
Season to Taste: Season the gravy with salt, black pepper, and any other desired seasonings.
Strain (Optional): For a smoother gravy, strain it through a fine-mesh sieve before serving.
Serve Immediately: Pour the gravy over your desired dish and enjoy!
