15 Tonkatsu Sauce

This is the Japanese version of Worcestershire sauce. It is called tonkatsu sauce because it is typically served with tonkatsu. Okonomiyaki and yakisoba sauces are sold in a very similar form and are almost identical in flavour, but okonomiyaki sauce is sweeter and yakisoba sauce is saltier. These are used for okonomiyaki (savoury pancakes) and yakisoba (fried noodles).