Korean BBQ Sauce | KLE International, Inc.
Stir soy sauce, brown sugar, garlic, rice wine vinegar, chile-garlic sauce, ginger, sesame oil, and black pepper together in a saucepan; bring to a boil.
Whisk cornstarch and water together in a small bowl until the cornstarch dissolves; pour into boiling soy sauce mixture. Reduce heat to medium-low and cook until the sauce is thick, 3 to 5 minutes.