Kecap manis is a sweet Indonesian soy sauce with a distinctive flavor that’s widely used in Indonesian cooking. If you don’t have it on hand, you can easily make a substitute at home.
In general, you can substitute 3 tablespoons of kecap manis with a mix of 1 tablespoon soy sauce, 1 tablespoon molasses, and 1 tablespoon brown sugar. You can make this ahead of time if you want the sauce to thicken slightly, but it’s not necessary.