What is Fresh koji?

Why We Make Fresh Koji

Fresh koji is at the heart of everything we do at Long Beach Koji. It’s the foundation of Japanese fermentation — alive, aromatic, and full of natural enzymes that transform ingredients in extraordinary ways. Koji is more than an ingredient; it’s a living culture. When freshly made, it carries delicate sweetness, a gentle floral aroma, and vibrant enzymatic activity. These enzymes break down starches, proteins, and fats, unlocking umami and creating depth in foods like miso, shio koji, amazake, soy sauce, and sake. Creating fresh koji is our way of preserving this tradition while sharing its possibilities with a new generation of cooks.

Why Fresh Matters

Most people only encounter dried koji. It’s convenient but it’s not the same. Fresh koji has:

• Higher enzyme activity

• Better aroma and sweetness

• More versatility in cooking

• A softer texture that blends easily

Fresh koji is traditionally made by hand, with careful attention to temperature, humidity, and timing. It’s a craft that requires patience and intuition. We built Long Beach Koji to honor this craft and make it accessible to anyone curious about fermentation.