This is an excellent, authentic oyako-don recipe. <br/><br/>Dashi may not be a familiar ingredient. It is broth made from seaweed and flavorings. It can be vegetarian (seaweed or mushroom based) but is often made from bonito. You can even get it in convenient powder form, where you just add hot water, similar to bouillon. I have seen it at normal grocery stores (check the Asian section) <br/><br/>The sauce in this recipe can be easily adapted to other meals. I have used it to simmer chicken and vegetables, then served over sticky rice. The sauce has a good balance of umami, sweet, and salty flavors. I usually add extra dashi and use low sodium soy sauce.