Natto – Japan’s Brain & Bone Superfood

Recipe – Ready in 16 to 20 Hours

Natto is a bold Japanese superfood known for its sticky texture, strong aroma, and unmatched nutritional benefits. Packed with probiotics, vitamin K2, and enzymes that support heart, brain, and bone health—natto is worth learning to love. With FermentPro, making natto at home is not only simple—it’s budget-friendly and fresher than anything you’ll find in stores.

🛒 Ingredients (Makes 4–5 Servings)

  • 1–2 lbs soybeans (non-GMO or organic preferred)

  • Natto starter culture (Bacillus subtilis natto)

💡 Starter Tip: Use high-quality natto starter or 1 tbsp store-bought fresh natto as seed culture.

Step-by-Step Directions

1. Cook the Soybeans Choose your method:

  • Slow Cooker (No Soak): Cook on low 6–8 hours with 2–3x water

  • Stovetop (Soaked): Soak 6–8 hours, simmer 3–4 hours

  • Pressure Cooker (Soaked): Soak 6–8 hours, cook 15–20 minutes

Beans should be soft but not falling apart.

2. Cool and Inoculate

  • Drain soybeans and let cool to room temperature

  • Sprinkle in natto starter and mix thoroughly with clean utensils

3. Pack & Ferment

  • Transfer beans to a clean fermentation container

  • Cover with plastic wrap (poke holes) or a loose-fitting lid

  • Ferment using FermentPro at 105°F (40°C) for 16–20 hours

4. Chill & Serve

  • Let natto cool and refrigerate for 2+ hours before serving

  • Store for up to 1 week in fridge

🧪 Nutritional Benefits (per oz):

  • Calories: 60

  • Probiotics: 300 billion CFU

  • Protein: 6g

  • Fiber: 2g

🧬 Adults need ~10–20 billion CFU/day—natto offers over 10x that per ounce!

Natto Health Benefits (Backed by Science)

  1. Brain Health

    • Vitamin K2 and nattokinase reduce brain inflammation 📚 Source: NHK, 2023

  2. Heart Health

    • Lowers arterial plaque and supports blood flow 📚 Source: University of Tsukuba

  3. Immune Support

    • Bacillus subtilis improves immunity and gut function 📚 Source: NHK, 2023

  4. Bone Strength

    • Vitamin K2 regulates calcium and supports bone density 📚 Source: Healthline

  5. Blood Sugar Regulation

    • Gamma-PGA helps reduce glucose absorption 📚 Source: NHK, 2023

🏡 Why Homemade Natto is Better (Especially with FermentPro!) ✅ Higher probiotic count—fresh & potent ✅ No fillers, stabilizers, or preservatives ✅ Choose organic beans and control sodium ♻️ Less packaging waste, reusable containers 🧘 Superfood status with a satisfying DIY process

💰 Natto Price Comparison (per 3 oz pack)

Type Cost per Pack
Store-Bought $2.89
Homemade Natto $0.72

Savings per pack: $2.17
Annual Savings (2 packs/week): $225.68

⚠️ Important Notes for Natto Success 🧊 Cool Beans First: Heat kills the starter culture—wait for room temp. 🥄 Use Clean Tools: Any contamination can affect your batch 🌡️ Keep Warm: Natto loves steady warmth—FermentPro keeps it consistent

🔥 Final Thoughts Natto may be unconventional, but it’s a science-backed health powerhouse worth adding to your wellness toolkit. With FermentPro, you get the easiest, most reliable way to ferment it at home—preserving its full flavor, potency, and healing power.

Ready to Make Your First Batch of Natto? Let the science (and the stickiness) begin!

Fermentation Time & Settings (FermentPro)

Item Category FermentPro Temp Setting FermentPro Time
Yogurt (No-Boil) Dairy 115°F 8–12 hours
Kombucha Beverage 85°F 3-4 days
Milk Kefir Dairy 70°F 24-30 hours
Water Kefir Beverage 70°F 24–48 hours
Sweet Rice Wine Beverage 90°F 20–36 hours
Fruit Wine Beverage 80°F 72 hours (3 days)
Sauerkraut Food 70°F 3–5 days 
Pickled Veggies Food 70°F 3–5 days
Tempeh Protein 90°F 27–36 hours
Sourdough Starter Bakery 72–85°F Manual refresh daily
Kimchi Food 70°F 3–4 days
Natto Protein 105°F 20–24 hours
Wine (Red/White) Beverage 80°F 2–3 days 
Home Sprouting Produce 70–85°F Manual (monitor daily)
Makeup Fridge Cosmetic 50–60°F Manual (storage)

Medicine Cabinet

Medical 50–70°F Manual (storage)



 

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