Umami seasoning shoyu-koji (soy sauce malt)

Rich, Fermented Shoyu Koji with Aged Bonito and Kombu Umami

This luxurious seasoning combines shoyu-koji—a naturally fermented blend of soy sauce and koji—with aged kare-katsuobushi (bonito flakes), kare-sodabushi (frigate mackerel flakes), and kare-sababushi (mackerel flakes). Carefully crafted using traditional Japanese methods, the fish flakes are fermented and dried over time to concentrate umami and eliminate bitterness.

What makes this shoyu-koji truly special is the addition of finely shaved dried bonito and kombu kelp, which deepens the flavor with layered umami, balanced saltiness, and subtle sweetness. The result is a versatile, ready-to-eat seasoning that captures the essence of high-quality dashi in every spoonful—perfect for enhancing rice, vegetables, or grilled dishes with elegant Japanese flavor.

What is Shoyu-Koji?

Shoyu-koji is a Japanese seasoning made by fermenting soy sauce with koji (a type of rice mold). The result is a naturally sweet, savory, and umami-rich sauce that enhances flavor and tenderizes food—perfect for healthy, everyday cooking.

“No Chemical Seasonings or Preservatives Added”

This product brings out the natural umami of its ingredients through scientific analysis and the refined skills of seasoned experts—without relying on any chemical seasonings or preservatives.

Using ON THE UMAMI’s proprietary technology, the natural variation found in ingredients is refined into a stable, consistent taste—so you can enjoy the same delicious flavor every day without getting tired of it.

Net weight: 80g (2.8 oz)

Shelf life: 6 months when stored in a cool place.

How to store: Store in a cool, dry place, away from light.

Ingredients: Soy sauce (wheat, soybeans, salt), Malted rice, Starch syrup, Sugar, Fermented dried bonito, Dried bonito, Fermented dried frigate tuna, Fermented dried mackerel, Salt, Kombu kelp, Ethyl alcohol.

Contains: Fish (bonito, frigate tuna, mackerel), wheat, soybeans.

Made in Japan: Carefully crafted in Japan using premium domestic ingredients. 

Nutritional Information