Kojira Fermented Mushroom Mineral Salt

Restaurant-Level Umami, Built for Ingredient-First Cooking

Fermented mushroom salt built for eggs, meat, broths, and slow-roasted vegetables.

Whole mushrooms, fermented to develop deep savoury compounds and natural lactic clarity, then integrated into mineral salt.

Purely savoury. No sweetness – just clean, structural umami.

It opens on warm food as the crystals soften into fat, releasing depth without heaviness.

Best used on eggs, steak, roasted vegetables, and simple, sauce-free dishes where flavour needs to stand on its own.

No artificial flavourings. No added MSG.

Built for cooks who work with whole ingredients and want precision in savoury depth.

How We Build Flavour, Differently

We ferment shiitake and orinji (king oyster mushrooms) in mineral-rich water from Thai springs, using our mineral salt from Isaan. The fermentation happens slowly, in small batches, in glass jars.

After fermentation, we dry and mill the mushrooms to preserve this transformed profile.

Shimeji mushrooms are handled separately. They are not fermented. We dry them for their natural sweetness and texture.

We then dehydrate the fermentation brine and reintegrate it into the mineral crystals. The milled mushrooms are folded through the salt so both plant material and crystallised brine bind into the structure of the salt itself.

Each batch is built this way. Fermented. Dried. Reintegrated by hand.

Flavour Profile

When the crystals meet warm food, clean umami and savoury depth release first, followed by a subtle lactic lift that sharpens and clarifies the flavour.

Purely savoury. No sweetness. Just clean, structural umami with a lactic lift.

Aroma:

Warm forest earth after rain, roasted mushroom depth, with a subtle dark woodland note often associated with aged wild fungi. A subtle lactic brightness keeps the depth clean.

First Contact:

It starts savoury and deepens as the crystals soften.

Mid-Palate:

Umami builds with subtle sweetness and a smooth, rounded texture. Fermentation adds quiet clarity beneath the mushroom’s natural richness.

Finish:

Extended length. The mushroom profile lingers on the palate before fading into warm mineral salinity.

Best Temperature Interaction:

Performs strongest on warm fats like butter, olive oil, egg yolk, or meat juices, where the crystals soften and the flavour opens up.

Culinary Uses of Fermented Mushroom Salt

This fermented mushroom salt functions as both a finishing salt and a structural umami seasoning. Use as a finishing salt, and add it once cooking is complete so the crystals can soften on warm surfaces and release their full savoury depth. Use sparingly: a small pinch is enough.

Best used on:

• Sliced steak after resting
• Roast chicken, especially skin-on cuts
• Roasted root vegetables
• Eggs: soft-boiled, jammy, or folded into omelettes
• Clear broths and simple soups
• Risotto at the final fold

Especially effective in protein-forward cooking.

How Do Our Two Umami Finishing Salts Differ?

Kojira Black Garlic Mineral Salt

• Dark sweetness with deep umami
• Richer, rounder finish
• Best when you want deeper, slightly sweeter savoury flavour

Kojira Fermented Mushroom Mineral Salt

• Pure savoury amplification
• Clean, structural umami
• Best when intensifying simple, sauce-free dishes

Compared to black garlic salt, this is purely savoury, no sweetness.

→ See how umami salt works and how to use it properly

Why It Tastes Like This

During fermentation, mushroom proteins break down into smaller peptides and free amino acids that intensify savoury taste.

Lactic fermentation introduces a slight acidity, which sharpens the flavour and makes the salinity feel more precise.

Ingredient Composition of Fermented Mushroom Salt

Shiitake contains naturally occurring compounds such as ergothioneine, retained through fermentation and drying.

Orinji (king oyster) contributes additional amino diversity, while shimeji adds natural sweetness and texture.

Fermentation produces organic acids and integrates these compounds into the structure of the ingredient.

The Mineral Salt Foundation

Built on our artisan mineral salt from Northeast Thailand, naturally rich in trace minerals that soften salinity and support flavour release. The mineral base carries the fermented mushroom compounds and releases them gradually as it softens on warm food.

Culinary Salt Collection

This salt belongs to the Culinary Salts collection, where mineral salt is paired with ingredients such as saffron, preserved lemon, and black garlic to shape flavour in different directions. Fermented mushrooms sit on the savoury end of that spectrum, delivering clean, structural umami without sweetness.
Explore the rest of the range:

• Artisan Mineral Salt — the mineral foundation
• Black Garlic Salt — sweetness and aged umami
• Preserved Lemon Salt — saline citrus lift
• Persian Saffron Salt — colour and aromatic warmth

Packaging & Preservation

Fermented mushroom contains volatile aromatic compounds developed during fermentation that flatten under prolonged exposure to light and oxygen.

This salt is stored in UV-protective amber glass, induction-sealed, and protected from air before closing to preserve its layered umami profile.

Cook your usual meals. Finish with this. Real, whole food becomes richer and more complete.