Asked by: Dr. Misael Bogisich

Why is natto not stringy?

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Note: If the natto fermentation is not successful, the finished natto may not be sticky enough, may not be stringy, or may be bitter or have strong smell of ammonia. On the other hand, white "frost" on the surface of natto as well as its stickiness does not guarantee the successful fermentation. Read more

  • Natto: The Stringy, Slimy, Superfood of Japan
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What is the stringy stuff on natto?

The bacteria that is added breaks down the proteins in the soy beans which results in the stringy, sticky substance on natto. Glutamate and fructan are a product of the fermentation process and gives the natto itsumami taste.

How do you make natto not slimy?

“I usually mix it with avocado, green onions and ponzu, and then it's quite good!” The secret ingredient in this recipe is extra-virgin olive oil! The oil coats the surface of the beans, making it less sticky. It also masks natto's strong smell and taste.

Can you over ferment natto?

It is rare to over-ferment. Most fermented food (including natto) self-regulates, over time (given the right amount of moisture) the less harmful bacteria and funghi force out (or prevent) the more evil strains of bacteria from forming until there is no more simple starches to feed on.

Do Japanese people eat natto everyday?

Yes. My family has natto for dinner fairly often. I used to not eat it because of the smell and sliminess, but I spent a week eating it every day to get used to it.

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Most frequently asked questions

Does natto go bad?

Answer: Natto should be stored refrigerated. If you wan to keep it beyond the expiration date, best is to freeze it as soon as you get it. Once frozen it can keep a year or longer.

Can dogs eat natto?

Natto is actually a common ingredient in Japanese dog food – those probiotics in the fermented beans are good for dogs, too – although we doubt many owners give their pets pure natto like this!

How long should I ferment natto?

The fermentation process requires the natto to be kept at approximately 100 - 105 F degrees for 22 to 24 hours. Ovens with a low-temperature setting can be used, as can large cube-shaped food dehydrators. Natto is quite odorous while fermenting, and you may want to isolate the natto during the fermentation time.

Do you have to stir natto?

Do I Need to Stir My Natto? ... Whipping natto introduces air into the sticky biofilm that surrounds the beans, creating a light, foamy mouthfeel, a bit like a freshly made smoothie but stickier. So if you enjoy neba-neba, then stir away because stirring only enhances this quality!

Why does my natto smell like ammonia?

If it is a strong smell, similar to ammonia, it means that the NATTO has over-fermented.



Natto: The Stringy, Slimy, Superfood of Japan

Can you make natto with store bought natto?

Add 1 tbsp of filtered water into the pack of natto and mix to loosen. Then spread the natto over the soy beans and mix well. If using the starter, sprinkle the starter over and mix. ... Then you must use the frozen store bought natto (because the bacteria is stronger).

How do you make natto good?

In Japan, natto is commonly served as a topping to rice. We recommend, however, to try adding plenty of vegetables, mustard (made with apple cider vinegar), wheat-free tamari, scallions and, if you like it, a little wasabi. Kimchi and natto is also a good combination, while okra enhances the flavor of natto.

How long will natto last in the refrigerator?

A. Natto can be stored for several months in the refrigerator. Press a piece of cheesecloth or unbleached parchment paper over the surface to retain moisture; store in an airtight container. The longer it is stored, the more pronounced the flavor will become.

How often do Japanese eat natto?

According to the statistics released by the Ministry of Internal Affairs and Communications in 2016, the average Japanese person eats 41 packs of nattō every year.

Do you eat natto cold or hot?

Heat the natto to soften the texture and bring out the natural flavors. If you don't enjoy the texture of the cold natto, try eating it warm. Rest the lid on the container, and place it in the microwave for 20 seconds, and then stir the mixture to redistribute the heat.

Do Japanese like natto?

Natto is a unique Japanese food which is made from fermented soybeans. ... Oddly enough, in Japan, the popularity of natto is largely marked out on regional lines. People in northern and eastern Japan tend to like it, and people in western and southern Japan tend to dislike it.

How do you make natto spores?

Pour 20ml of pre-boiled water into a cup, and mix in salt, sugar and 0.1g of natto bacteria (See the note bellow in this section). Natto bacteria spores are very resistant to heat. It will take one hour at 140°C (284°F) to kill all the natto bacteria. But make sure the water temperature is bellow 80°C (176°F).

How much natto can you eat a day?

Amounts and Dosage

There is no set recommendation for nattokinase, but studies suggest its health benefits come with an oral dose of 100 to 200 milligrams a day.

Can I make natto without a pressure cooker?

Natto can also be aged in the refrigerator for 3-4 days. You can still cook the soy beans without a pressure cooker. The pressure cooker just speeds the cooking process.

Is natto aerobic or anaerobic?

Natto is one of the few products in which bacteria predominate during fermentation. The responsible bacterium has been identified as Bacillus natto, an aerobic Gram‐positive rod‐shaped aerobic spore former closely related to Bacilllus subtilis.

How long does homemade natto last?

The natto can be stored in the refrigerator for up to one week, and can also be frozen for up to two months. Also, keep in mind that when making your own natto, the fermentation process can give off a strong odor.

Is nattokinase a blood thinner?

Natto is made from boiled soybeans that have been fermented with a type of bacteria. Nattokinase may thin the blood and help break up blood clots. This might protect against heart disease and conditions caused by blood clots such as stroke, heart attack, and others.

Can I give my dog nattokinase?

In dogs, oral administration of nattokinase completely dissolved induced clots from major leg veins within 5 hours of administration, whereas the clots in dogs receiving placebo showed no thrombolysis up to 18 hours.

Can dogs eat fermented soybeans?

Soy and soy products generally pass the tests. This means that dogs can digest soy, and soy has not been proven to do anything negative to dogs who eat it. Soy is the most complete vegetable source protein typically used in pet food manufacturing, and is a more affordable source of protein than meat or eggs.