The katsuo dashi is a dashi made with bonito flakes or katsuobushi.It is characterized by its refined taste and rich aroma, and it's an all-purpose dashi that brings out the taste of any ingredients.This dashi doesn't need much time to soak in the water like other ingredients, so you would be able to make it quickly when you want to eat miso soup.The flavor of katsuo dashi will be improved by combining it with the vegetable-based kombu dashi.