Ichiban dashi is the first extraction made from kombu and katsuobushi, and it shows how Japanese cooking builds flavor through careful extraction rather than long simmering. This guide explains not only how to make it step by step, but why each step matters. Follow the process carefully, and you can produce a broth that is transparent, aromatic, and deeply savory — without ever becoming heavy or cloudy.In Japanese cooking, technique is not only about drawing flavor out of ingredients. It is also about knowing when to stop. This is why kombu is removed before the water reaches a boil, why ...