Katsuobushi

Katsuobushi
Katsuobushi shavings from a package
Steam animates katsuobushi
A bag of katsuobushi flakes

Katsuobushi (Japanese: 鰹節) is simmered, smoked and fermented skipjack tuna (Katsuwonus pelamis, sometimes referred to as bonito). It is also known as bonito flakes or broadly as okaka (おかか).

Shaved katsuobushi and dried kelpkombu—are the main ingredients of dashi, a broth that forms the basis of many soups (such as miso) and sauces (e.g., soba no tsukejiru) in Japanese cuisine.

Katsuobushi's distinct umami taste comes from its high inosinic acid content. Traditionally made katsuobushi, known as karebushi, is deliberately fermented with Aspergillus glaucus fungus in order to reduce moisture. Katsuobushi has also been shown to impart kokumi (a term translated as "heartiness").[1]

  1. ^ Mikiharu Doi (2013). "8: Investigation into the Kokumi Taste of Soup Stock Materials". In Toko, Kiyoshi (ed.). Biochemical sensors: mimicking gustatory and olfactory senses. Singapore: Pan Stanford. p. 123. ISBN 978-9814267076.