--- product_id: 708905349 title: "Natto Starter Spores Powder 0.1 oz (3g), Can make up to 10-30kg Natto, 100% Made From Organic Soybean Extract, Made in Japan" brand: "kawashimaya" price: "¥6706" currency: JPY in_stock: true reviews_count: 5 url: https://www.desertcart.jp/products/708905349-natto-starter-spores-powder-0-1-oz-3g-can-make store_origin: JP region: Japan --- # 1×10¹⁰ CFU/g Fermentation Power 100% Organic Soybean Extract Resealable Zip-Lock Packaging Natto Starter Spores Powder 0.1 oz (3g), Can make up to 10-30kg Natto, 100% Made From Organic Soybean Extract, Made in Japan **Brand:** kawashimaya **Price:** ¥6706 **Availability:** ✅ In Stock ## Summary > 🌿 Unlock the ancient Japanese superfood magic—ferment your own health revolution at home! ## Quick Answers - **What is this?** Natto Starter Spores Powder 0.1 oz (3g), Can make up to 10-30kg Natto, 100% Made From Organic Soybean Extract, Made in Japan by kawashimaya - **How much does it cost?** ¥6706 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/708905349-natto-starter-spores-powder-0-1-oz-3g-can-make) ## Best For - kawashimaya enthusiasts ## Why This Product - Trusted kawashimaya brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Freshness Locked In:** Resealable pouch with zip-lock keeps your starter spores potent and ready whenever inspiration strikes. - • **Organic Purity Guaranteed:** Made from 100% non-GMO organic soybean extract for clean, natural superfood creation. - • **Supercharged Fermentation:** Harness the potent 1×10¹⁰ CFU/g Bacillus subtilis for flawless natto every time. - • **Effortless Success Support:** Step-by-step English instructions plus video guide ensure your natto journey is smooth and rewarding. - • **Massive Yield, Minimal Effort:** Just 3g can produce up to 30kg of nutrient-packed natto—perfect for home chefs and pros alike. ## Overview Kawashimaya Natto Starter Spores Powder is a premium, 100% organic, non-GMO fermentation culture with a powerful 1×10¹⁰ CFU/g Bacillus subtilis concentration. This 3g pack can yield up to 30kg of authentic natto, enriched with probiotics, Vitamin K, and proteins. Designed for both beginners and professionals, it includes detailed English instructions and a resealable pouch to maintain freshness, making homemade natto easy, efficient, and reliable. ## Description Natto Starter Spores Powder - Extracted from Organic Soybeans, 100% Purely Cultured Natto Bacteria for making natto (Bacillus subtilis natto：1x10^10 CFU/g). Made from non-GMO organic soybean extract. Natto starter culture by Kawashimaya is easy to use even for first-timers who want to make delicious natto at home because it has a strong fermentation culture ability. This 3g (0.1oz) package can make up to 10-30kg (22-66 lbs) of natto. For first-timers, let's use more natto starters as a guide (2x or 3x). The more natto starter used can increase the possibility of success. Be sure to sanitize the tools before making natto. What is Natto? The Japanese superfood made from fermented soybeans. It has a unique flavor and sticky strings. Delicious to enjoy with rice, soups, and noodle dishes for everyday consumption. Rich in raw probiotics, proteins, Vitamin K, dietary fibers, isoflavones, which are good for your health and beauty. English instruction about How to Make Natto will be sent by email. Store the natto starter in a refrigerator (cold and dark place) with low humidity. Immediately use after opening. ## Features - ORGANIC NATTO STARTER: Purely cultured Bacillus Subtilis Natto made from 100% organic soybean extract. Use to make delicious Natto, a superfood rich in probiotics, Vitamin K, proteins, etc - EFFICIENT & EASY TO USE: 3g (0.1oz) package is enought to make up to 10-30kg (22-66 lbs) of natto. It has a strong fermentative power compared to other starters (1×10 - 10 CFU/g). Suitable for making high-quality natto professionally or homemade - SPOON & ENGLISH INSTRUCTIONS INCLUDED: How to Make Natto instructions will be emailed. We also display the how-to video on the product page. The measurement spoon is back and will attached to the product - RESEALABLE PACKAGING: Comes in pouch packaging with a zip lock for easy storage. Please keep it at a low temperature or in the refrigerator before and after opening - MAKE NATTO EASILY, OR WE'LL REFUND YOU: Please message us for assistance if you have difficulty making natto using this product. 100% refundable because we support your successful natto-making journey ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B09325M42X | | Manufacturer | KAWASHIMAYA | | Package Dimensions | 25 x 15.9 x 0.7 cm; 10 g | ## Product Details - **Brand:** KAWASHIMAYA - **Item weight:** 10 Grams - **Package weight:** 0.02 Kilograms - **Specialty:** Organic - **Unit count:** 3.0 Grams ## Images ![Natto Starter Spores Powder 0.1 oz (3g), Can make up to 10-30kg Natto, 100% Made From Organic Soybean Extract, Made in Japan - Image 1](https://m.media-amazon.com/images/I/61pYSSZM+2L.jpg) ## Questions & Answers **Q: Can you drink natto starter as a supplement?** A: Please do not drink it because it is a natto starter specially made for natto making. **Q: Can you use natto as a starter?** A: Store-brought natto has a weaker bacteria power than natto starter. Please use this natto starter with higher bacteria power and quality. A small package goes a long way. **Q: Why is my natto doesn’t have the sticky string?** A: Maybe the fermentation process did not go well. Ferment it for about 12 more hours. **Q: Why does my natto smell like ammonia?** A: Let it sit in the refrigerator overnight after the warming process. Fermentation will stop, and the odor of ammonia can be alleviated. **Q: Is it okay to eat natto everyday?** A: Natto is high in protein, fiber, minerals, Vitamin K, Vitamin C, etc. Please eat one serving of natto (150g/5.3oz) per day to get its nutrition and health benefits. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Not a lot for the cost, but I love Natto and want to make it myself. *by on Reviewed in the United Kingdom 7 January 2026* I am new to making my own Natto, I made two batches with this sachet, one was successful and the second wasn't. I have no idea why but I assume it was my process otherwise I wouldn't have managed to get a good batch first. I am waiting for it to become available to buy again so I can have another go, as I really love natto and knowing how fantastically healthy it is for you, I want to keep producing it. ### ⭐⭐⭐⭐⭐ Highly recommend *by on Reviewed in Canada 19 April 2026* Very authentic results; potent fermentation that is easily activated and produces mild, pleasant flavour ### ⭐⭐⭐⭐⭐ Natto buonissimo *by on Reviewed in Italy 16 June 2025* Finalmente ho trovato uno starter molto buono e che funziona. Il fatto che sia poi prodotto in Giappone aumenta la sua considerazione. Nella confezione non è specificato la quantità per soya. Probabilmente in Giappone variano a secondo del prodotto che vogliono ottenere. Io uso 1 gr per 1 kg di soya cotta. Di solito ne preparo 400 gr che è già tanto. Ne mangio 50/ 100 gr al giorno. ## Frequently Bought Together - Kawashimaya Natto Starter Spores Powder 0.1 oz (3g), Can make up to 10-30kg Natto, Made From Organic Soybean Extract - Soymerica Non-GMO Soybeans - 7 Lbs. Identity Preserved (IP). Great for Soy Milk and Tofu. 100% Product of USA. Non-GMO Project Verified - Japanese Natto Starter Spores (Nattomoto) - 3g (enough to make 30kg of natto). 100% Organic Soybean Extract. 100% Product of Japan --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/708905349-natto-starter-spores-powder-0-1-oz-3g-can-make](https://www.desertcart.jp/products/708905349-natto-starter-spores-powder-0-1-oz-3g-can-make) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-16*