Here's a quick and easy recipe for how to make Yakisoba Sauce to season the popular Japanese fried noodles! The taste is similar to Otafuku brand‘s famed yakisoba sauce.
In a mason jar or bowl, whisk together 3 Tbsp oyster sauce, 2 Tbsp ketchup, 1½ Tbsp soy sauce, and 1½ Tbsp sugar until well combined and the sugar is dissolved.
Add 7 Tbsp Worcestershire sauce (I use Lea & Perrins brand) and whisk it all together. It‘s important to taste the sauce and adjust the seasoning, if needed. For example, some ketchup is sweeter than others, so adjust the amount of sugar to taste. Keep in mind that you will be using this sauce for the noodles, so the flavor should be strong and not bland.