Dark soy sauce is used in traditional Chinese cuisine alongside light soy sauce. As a result, in the absence of its darker sibling, light sauce is the perfect substitute. It’s also super easy to find and most households have a bottle of it in their fridge. However, should you run out of it, there are other suitable alternatives you could replace both soy sauces with. For example: teriyaki sauce, oyster sauce, hoisin sauce, double black soy sauce, Worcestershire sauce, mushroom-flavored dark soy, and your own DIY version! Keep in mind these other substitutes do change the flavor anywhere from slightly to significantly so use them with care. We recommend sticking to the Asian sauces on the list for best results though. Aside from that, don’t be afraid to have fun!