Description
Katsuobushi is produced by fermenting, smoking, and drying skipjack tuna to create a hard, umami‑rich product.
Technical
The process relies on proteolytic enzymes that break down myofibrillar proteins into peptides and free amino acids, followed by Maillard reactions during smoking that generate melanoidins and aromatic compounds. Controlled temperature and humidity prevent spoilage while allowing the development of glutamic acid, inosine monophosphate, and 5′‑nucleotides that contribute to the characteristic umami flavor.
Science
Primary Reaction
Proteolysis and Maillard reactions
Sensory Profile
Aroma ()
smokyumamidried fishearthyslightly sweetwoodymarinecaramelizednuttyfermented