Japanese Natto Starter Spores (Nattomoto) - 3g (enough to make 30kg of natto). 100% Organic Soybean Extract. 100% Product of Japan

Some of the bad reviews of this made me wonder, but I have had great results with these spores. I buy small soybeans labeled as “soybeans for sprouting” at Hmart, and use my Instant Pot for soaking, cooking, and fermenting my natto. First I put 2 cups of soybeans in the inner pot of my Instant Pot, add enough water to cover by several inches, and cover with the glass lid. I let them soak for about 24 hours (or until the top of the soaking water looks bubbly). Then I drain the beans into a steamer basket and put this in my pot along with a couple of cups of water. I cover this with the pressure cooker lid (remembering to close the valve) and set it to the following: Pressure Cook / High Pressure / Normal / 40 minutes and I turn off the Keep Warm function. (I have the 8 quart Instant Pot Duo, some of the buttons and settings may run a little different on other versions.) Once this is done, I let the pressure release naturally, which takes about 22 minutes. While the pressure is releasing, I fill my electric steam kettle with water and bring this to a boil. Into a large stainless steel bowl or half-gallon mason jar I throw the following items: 1/8 and 1/4 tsp , and 1 tbsp measuring spoons, steaming cloth or cheesecloth, and a spoon large enough to mix the beans. Over these I pour the boiling water to sterilize, leaving it for 5-10 minutes and then draining. Once the pressure has come down, I remove the steamer basket with my beans and place this on the counter. I pour out all but 2 tbsp of the liquid from my Instant Pot. To this I add 1 itty-bitty spoonful of the natto spores (using the little spoon included with them), 1/4 tsp brown sugar, and 1/8 tsp salt. I mix these together using the spoon I sterilized, then dump the beans in on top of this and thoroughly mix everything. I line the now empty steamer basket with a steaming cloth or cheesecloth, spoon the beans on top of this, and then fold the remaining cloth over the top to cover the beans. I give a quick rinse to the inner pot of my Instant Pot and put the steamer basket back inside. This then goes back into my Instant Pot, which I cover with a glass lid and set to Yogurt - Normal - 24 hours. I find that my natto is fully and reliably fermented at this setting after 24 hours. I then pull the steamer basket out of the pot and set in on the counter until the beans are cool. This takes several hours. Then into the fridge they go. They seem ready to eat the next morning, although traditional recipes say to let them cure in the fridge for 3-5 days before eating. I’m honestly not sure what difference it makes. How long do they keep once refrigerated? I’ve never had them go bad, although I suppose that’s possible. Some people say they become gritty or grainy if you keep them too long, although I haven’t seen that. I aim to eat these daily, but sometimes I forget about them and they sit in the fridge. They don’t seem to change much over time once fermented. To eat, I take about 1/2 cup and mix in a spoonful or two of soy sauce.

I was hesitant to use this because I had success making natto from premade frozen natto that I bought from the store and didn't want to take any chances making a bad batch. However, I ran out of frozen natto so I decided to try these spores that had been in the cabinet for a few months. The instructions are not in English, but can be easily found online. I used a similar process to what Emmymade on YouTube does. Of course using the spores instead of premade natto. It was a great success. To me, the natto smelled and tastes stronger than when using premade natto as a starter. The taste was great and the best natto have a tasted to date. I eat it with some jasmine rice an and sweet soy sauce. I will be using these natto spores from now on instead of using frozen natto as my starter. Quick Rundown of how I made my natto. 1. Rinsed and soaked 2 cups of soybeans for about 24 Hours. 2. Drained beans and cooked in insta pot for 25 minutes on the bean setting adding water to one inch above beans first. I let the unit depressurize on its own after the cook. 3. Sterilized a strainer, glass bowl, small measuring cup, two larger spoons, tongs and thermometer with boiling water from tea kettle. 4. Drained beans and let cool to at least 115º. Set aside about 3 tablespoons of this 'bean water' in the sterilized measuring cup 5. Put cooked beans into glass bowl that can fit in insta pot. Added about 1 of the little spoons of nattomato to beans and stirred in some of set aside water as needed. (Next time I will add the spores to this water first and then stir it in together.) There are some instructions that say you can only lay the beans three deep to have success, but mine were placed in a glass bowl that could fit inside the insta pot. The beans were several layers deep. 6. Covered bowl with saran wrap and poked many. many holes in the top. 7. Added about 1/4 cup of water to insta pot and placed steaming rack on the bottom (collapsed so bowl would fit) 8. Used Yogurt setting on Normal. Let ferment for 16 hours. I did stir the natto at 9 hours. I don't know if that was necessary. If you do this make sure your spoon is sterilized. 9. After fermentation put the beans in the fridge for 2 days and then put two portions in zip loc baggies for freezing while keeping out a several day supply in the fridge for daily consumption.

I've been making Netto for 5 years. My Natto always comes out wonderfully thanks to Nattomoto. I believe that one Nattomoto would last at least for a few years. I highly recommend Nattomoto for all Natto lovers who make homemade Natto.

compact and easy to use

I carefully followed instructions after 24 hours, nothing works and the beans don't change the status at all. I used real Natto which was purchased from Japanese store and worked very well. I know how to make Natto at home. But from the reviews of other people on Amazon, seems it is a good product. Why the one i got doesn't work. May be some of the products are defected? Is there a customer service which can ,at least, send another bottle to try ?

My natto look like this as in this image. Gittery white spots on the top layer. It forms strings when I stir it but it's more gue. beans are breaking down too and forms creamy sludge. It has mild ammonia smell and tastes like boiled soy bean. I checked online videos and images that show more smooth white coating on the beans. Mine shows small round patches like bacteria colonies on the bean. Doesn't look like any presentable natto. I think I over boiled the beans, left more than adequate moisture or water, and used a little bit more spores. But I fermented it for 24 hours as recommended. Not sure should I discard this batch and try again. Everyone online tells you how to make but nobody tells how not to make. I think I made it the way how it should not be made.