Niboshi dashi is a Japanese broth made from small dried sardines. Where kombu dashi is delicate and katsuobushi dashi is refined, niboshi dashi is bolder—deeper, earthier, and more savory, with enough strength to stand up to miso, soy sauce, and rich toppings. Its primary umami compound is inosinate, the same class of umami found in katsuobushi, but niboshi gives it a more rustic character. Many cooks pair niboshi with kombu to create umami synergy between inosinate and glutamate, deepening the broth even further. The result is one of the most satisfying everyday broths in Japanese home cooking, and the ...