Product features: It is a set of 3 pieces that contains 1 each of our own dashi (naked flakes), bonito stock, and ayudashi, so you can enjoy the taste of each dashi. If you add the soy sauce you always use, you can easily make a full-fledged dashi soy sauce. You can add it and use it as many times as you like until you run out of broth. If you add vinegar, you can also make dashi vinegar.