In a large saucepan, bring 4 cups of warm water to a gentle boil.
In a small bowl, add Beef Base and ¼ cup warm water, whisk until base dissolves; set aside.
Reduce heat on stove to medium; pour base-water mixture into saucepan, whisk to combine.
In another small bowl, add corn starch and cold water, whisk to combine.
Slowly add cornstarch slurry into saucepan, cook and whisk until gravy thickens, about 2 minutes. Season with pepper.
