This 5-ingredient homemade katsu sauce is the perfect balance of sweet, tangy and full of flavor. This katsu sauce recipe is the perfect condiment to serve with your Japanese chicken katsu or tonkatsu.
Combine. In a small mixing bowl, combine the ketchup, Worcestershire sauce, oyster sauce, sugar, and dijon mustard together.
Notes
Adjust to taste! This is your homemade katsu sauce. That means you should adjust it based on your taste preferences. If it is too tangy, add a pinch of sugar. Want more of a kick, add a little more mustard sauce. Need it to be saltier, add more oyster sauce. The options are endless.
Double the recipe to save for later! The best part about a 4 ingredient homemade tonkatsu sauce recipe is that you can easily double the recipe to save for later.