Description
Katsuobushi is a fermented, smoked, and dehydrated bonito fillet used as a fundamental umami base in Japanese cuisine.
Technical
During the initial 2–3 day fermentation at 20–25 °C, lactic‑acid bacteria and Aspergillus spp. produce proteolytic enzymes that hydrolyze myofibrillar proteins into free amino acids, especially glutamate. Subsequent smoking at 30–40 °C deposits phenolic compounds from pine or cedar wood, which act as natural antioxidants and antimicrobials, while prolonged low‑temperature drying (20–25 °C for 6–8 weeks) removes moisture to <5 %, concentrating the flavor precursors and stabilizing the product.
Science
Primary Reaction
enzymatic proteolysis of fish muscle proteins
Sensory Profile
Aroma ()
smokypineywoodyumami-richsubtle fishyearthycaramelizedsavorycomplexaged