How to Make Mushroom paste
Fermented mushroom paste is an umami powerhouse, concentrating the savory depth of mushrooms while adding complex fermented notes. This paste rivals fish sauce and soy sauce for pure savory impact.
Category: Pastes & Sauces · Method: Fungal/Mold · Time: 14-90d · Difficulty: 3/5 · Yield: varies · Temp: 18-22°C
History
Mushroom fermentation appears in Asian cuisines, from Chinese mushroom soy to Japanese shiitake preparations. This paste form creates a vegetarian-friendly umami bomb for modern cooking.
Ingredients
- 1 kg Mixed mushrooms — Cremini, shiitake, or wild mix
- 30g Sea salt — 3% of mushroom weight
- 2 tbsp Soy sauce — Optional, boosts umami
- 4 cloves Garlic — Optional
Equipment
- Food processor
- Large skillet
- Fermentation jar with airlock
- Kitchen scale
Instructions
Clean and chop mushrooms
Wipe mushrooms clean (don't wash). Roughly chop into even pieces.
Time: 10 min
Tip: Mix varieties for more complex flavor.
Dry sauté
Cook mushrooms in dry pan over medium-high heat until they release and reabsorb their liquid.
Time: 15 min
Tip: This concentrates flavor and kills surface bacteria.
Process and salt
Cool mushrooms, then process to paste. Mix with salt and optional soy sauce.
Time: 10 min
Tip: Mushrooms should be room temperature before fermenting.
Ferment
Pack into fermentation jar. Ferment 5-10 days at room temperature.
Time: 5-10 days
Tip: Mushrooms ferment quickly due to their cellular structure.
Process smooth
Blend to desired consistency after fermentation.
Time: 5 min
Fermentation Timeline
- Day 1-2: Activation — Bubbling begins. Deep earthy aroma.
- Day 3-5: Active fermentation — Intense umami develops.
- Day 5-10: Maturation — Complex, meaty flavor peaks.
Signs of Success & Spoilage
Good signs
- Deep brown color
- Intense savory, earthy aroma
- Rich umami taste
- Smooth, thick consistency
Warning signs
- Blue or green mold
- Ammonia smell
- Slimy or stringy texture
- Sour, off-flavor
Troubleshooting
- Too salty
- Cause: Salt percentage too high Solution: Use in smaller quantities. Dilute with stock when cooking.
- Weak umami
- Cause: Bland mushroom variety Solution: Add dried shiitake powder or miso to boost.
- Mold growth
- Cause: Too much air exposure Solution: Remove mold, pack down, ensure no air pockets.
Storage
Refrigerate in sealed jars Keeps 6 months refrigerated. Can freeze for longer storage.
Health Benefits
- Rich in B vitamins
- Contains selenium
- High in natural glutamates
- Good source of ergothioneine
Serving Suggestions
- Stock and soup enhancer
- Gravy secret ingredient
- Risotto enrichment
- Burger mix-in
- Sauce depth builder
Related Pastes & Sauces Ferments
Other Fungal/Mold Ferments
- Miso — Condiment
- Tempeh — Legumes & Soy
- Shoyu — Legumes & Soy
- Tamari — Legumes & Soy
- Doubanjiang — Legumes & Soy
- Gochujang — Legumes & Soy
- Tauco — Legumes & Soy
- Meju blocks — Legumes & Soy