How to Eat and Cook with Natto: Techniques, Recipes, and Pairings

If you're new to natto entirely — What Is Natto covers what it is, the four main types (itohiki, hikiwari, kotsubu, okara), why it smells the way it does, and its nutritional profile including 870mcg of vitamin K2 per 100g. This page assumes you know the basics and focuses on what to do with it.

The Technique That Changes Everything: Stirring

Most people stir natto casually, add the tare, and wonder why their natto tastes flat. The sequence matters as much as the repetition.

1. Stir BEFORE adding tare: 40–50 times minimum. Count it. Use chopsticks and stir vigorously in a circular motion directly in the styrofoam container. The polyglutamic acid peptides that create the strings develop with mechanical action — they bind the flavour compounds to the surface of the beans as the strings lengthen. After 40–50 stirs the coating turns from white and loose to creamy-beige and glossy, and the strings stretch 10–15cm before breaking.
2. Add the included tare and karashi, then stir 10–15 more times. Adding tare before the initial stir inhibits thread development because the salt in the sauce draws moisture away from the beans. The mustard (karashi) is not optional — it cuts the richness and counterintuitively reduces the perceived intensity of the aroma.
3. Temperature choice: cold natto straight from the fridge produces slightly firmer strings and a cleaner fermented note. Room-temperature natto (left out 10 minutes) has slightly more aroma and a softer bean texture. Both are valid. Do not warm the natto separately — the hot rice does the right amount of warming.

The difference between properly stirred natto (50 times, pre-season) and hastily stirred natto (10 times, tare added first) is significant and immediately noticeable. This is not a myth or food ritual — the mechanism is real.

Natto Gohan — The Standard Application

Natto gohan is not just natto dumped on rice. The rice temperature, placement, and topping order all affect the result.

• Rice temperature: hot rice (just cooked, 60–70°C at the surface) softens natto slightly, which most people prefer. Cold rice produces more textural contrast — some prefer this in summer. Hot rice is the traditional default.
• Amount: 1 pack (40–50g) per rice bowl (150–180g cooked rice). This is the standard ratio in Japan — enough natto to flavour every bite without overwhelming the rice.
• Placement: natto ON TOP of the rice, not mixed in. Eat by taking both natto and rice together in each bite — the goal is to maintain the rice-to-natto ratio throughout the bowl, not to pre-homogenise them.
• Classic additions: 1 tablespoon chopped negi (spring onion) is standard. Raw egg yolk placed in the centre creates tamago kakekomi style — break the yolk into the natto before serving for a silky result. Kimchi (2 tablespoons), pickled ginger, or oroshi (grated daikon, 2 tablespoons) all work well.
• Kizami nori: shredded dried nori added on top adds sea-umami and a crispy contrast. See what nori is and why it pairs so well with fermented flavours.

For the full recipe with seasonal variations → Natto Gohan Recipe

Breakfast Combinations

Natto is a breakfast food in Japan. These are the combinations worth knowing, from traditional to accessible for newcomers:

Tamago-Natto Gohan

Break one raw egg yolk directly into the prepared natto (after stirring, before adding tare). Stir the yolk into the natto — it coats the beans and becomes silky with the strings. Then add tare and stir 10 more times. Serve over hot rice. The result is richer and softer than plain natto gohan, with the aroma substantially reduced by the fat in the yolk. This is the most effective beginner technique.

Natto + Kimchi + Spring Onion

A common Korean-Japanese crossover breakfast. 2 tablespoons of kimchi adds fermented sourness that reframes the natto aroma entirely — instead of reading as simply pungent, the combined ferment reads as complex. Pile spring onion on top. Over hot rice, this is one of the most satisfying natto preparations.

Natto + Avocado Rice Bowl

Western-friendly gateway. Mash half an avocado with 1 teaspoon soy sauce and a squeeze of lemon, spread over warm rice, then top with prepared natto and sesame seeds. The fat in the avocado softens the sharp edges of the natto aroma. Use hikiwari (crushed bean) natto here for easier integration.

Natto + Nori Wrap

A portable option. Place a spoonful of prepared natto in the centre of a half-sheet of yaki nori (toasted seaweed), fold into a cone or parcel, and eat immediately. The nori provides crispy contrast and sea-umami that is very effective alongside the fermented flavour. Eat within a minute — the nori softens quickly from the moisture in the natto.

Natto Toast

Toast a slice of sourdough until firm. Top with prepared hikiwari natto, thin-sliced spring onion, a drizzle of soy sauce, and a pinch of toasted sesame seeds. The crunchy bread provides textural contrast that rice does not. This is a common modern Japanese breakfast in younger urban households and an accessible entry point for non-Japanese eaters.

Natto in Maki Sushi

Natto maki is more common in Japan than at Western sushi restaurants, which tend to avoid it. The technique requires one important adaptation:

• Use hikiwari natto — the hulled, crushed bean variety. Standard itohiki natto is too stringy to roll cleanly; hikiwari integrates with the rice and stays in the roll. Amount: 50g per roll.
• Roll style: thin hosomaki (half-sheet nori, 60–70g sushi rice). Place a narrow line of hikiwari natto down the centre — about 2cm wide. Optionally add a thin strip of cucumber or 1–2 shiso leaves; the shiso leaf is particularly effective because its herbal character cuts the fermented intensity.
• Serve cold: natto maki should be kept refrigerated and eaten within 2 hours. The rice hardens beyond that point.
• No wasabi in the roll — serve wasabi on the side. Wasabi mixed into the natto before rolling overwhelms the roll with heat.

Cooked Natto Applications

Critical rule before anything else: do not heat natto above 70°C. Nattokinase denatures and Bacillus subtilis dies above this threshold. For cooked dishes, the technique is consistent: cook the dish fully, take it off heat, then fold in the natto with residual warmth only.

Natto Pasta

For one serving: cook 80g spaghetti to al dente. While the pasta cooks, prepare 1 pack of natto with 1 tablespoon soy sauce and 2 teaspoons mirin instead of the included tare (mirin adds a slight sweetness that rounds the fermented note against pasta). Drain the pasta. OFF HEAT, add 1 tablespoon butter to the hot pasta, toss until melted, then immediately fold in the prepared natto. Plate and top with kizami nori strips and thinly sliced spring onion. The butter coats the beans and softens the flavour considerably.

Natto Fried Rice (Natto Chahan)

Cook fried rice as normal — rice, egg, spring onion, soy sauce, sesame oil, high heat. When the rice is cooked and you have turned off the heat, fold in 1 pack of natto gently. The residual heat from the wok or pan warms the natto without destroying enzymes. Add a final drizzle of soy and toss once more. The natto strings distribute through the rice, creating pockets of fermented umami in each mouthful.

Natto Miso Soup

Make dashi and dissolve your miso paste off the heat as normal (see how to use miso for the correct temperature technique). Once the miso is dissolved and the soup is below boiling, stir in half a pack (20–25g) of natto per bowl. Stir gently — too vigorous and the strings disperse into the broth and make it cloudy. Add tofu, wakame, and spring onion as usual. This is a traditional preparation in Ibaraki prefecture.

Natto Ochazuke

Ochazuke is hot tea poured over rice — a traditional Japanese comfort food. Natto ochazuke: place 1 pack of prepared natto over a bowl of cooked rice (the same short-grain Japanese rice you would use for gohan). Pour 70–80°C green tea (bancha or hojicha work well — their roasted notes complement the fermented flavour) gently over the rice until half-submerged. Stir once. The tea warms the natto to below 70°C and softens the flavour significantly. This is one of the most approachable warm natto preparations.

Fusion and Non-Japanese Applications

Natto's fermented umami works outside Japanese contexts. The rule remains: use it at room temperature or warmed gently. Do not bake or fry natto directly.

Natto Avocado Toast

Mash one ripe avocado with 1 teaspoon lemon juice and a pinch of salt. Spread thickly on toasted sourdough. Top with 1 pack of prepared natto (hikiwari works best here), a scattering of sesame seeds, and micro herbs or thinly sliced radish. The avocado fat and lemon acidity both reduce natto's intensity — this is probably the most effective Western-audience introduction to the ingredient.

Natto Grain Bowl

Use natto as a protein element in grain bowls built on farro, quinoa, or brown rice. Base: cooked grain + pickled cucumber or daikon + shredded cabbage. Dressing: 1 tablespoon white miso + 1 tablespoon rice vinegar + 1 teaspoon sesame oil. Top with 1 pack natto and spring onion. The acidic miso dressing integrates the fermented flavour into a broader composition where it reads as complexity rather than pungency.

Natto Pizza

A genuine Tokyo trend: thin-crust pizza with mozzarella and spring onion baked normally at high heat, then topped with hikiwari natto immediately after coming out of the oven (not baked in — the heat rule applies). Add a drizzle of soy sauce and sesame oil. The hot cheese and crust warm the natto passively. The natto's fermented depth plays against the dairy in a way that is less strange than it sounds.

Natto Caesar

Natto's fermented umami profile is surprisingly compatible with Caesar dressing — both rely on anchovy-like savour, saltiness, and depth. Add 1 pack of hikiwari natto (unstirred, so the beans remain separate) to a standard Caesar salad with romaine, parmesan shavings, and croutons. The beans replace or supplement anchovies. Do not stir the natto into the dressing beforehand.

Pairings That Reduce Intensity (for Beginners)

These pairings work by different mechanisms. Some mask the aroma, some reframe it, some dilute it. All are legitimate first-exposure strategies:

• Pickled ginger (gari or benishoga): the acidity cuts directly through the ammonia note. 1 tablespoon alongside natto gohan provides periodic relief between bites.
• Kimchi: fermented sourness reframes the natto aroma. Instead of registering as unpleasantly pungent, the combination reads as layered ferment. This is the most effective single pairing for reducing perceived intensity.
• Avocado: fat softens the sharp edges of the aroma. The avocado coats the palate and reduces volatile aroma perception. Use half an avocado, diced or mashed, alongside natto.
• Karashi mustard (counterintuitive): adding more karashi than the packet provides — up to 1 teaspoon — reduces perceived intensity. The sharp heat of the mustard creates a competing sensation that makes the ammonia note recede. This is the Japanese kitchen's standard approach.
• Raw egg yolk: the fat and protein of the yolk coat the beans, physically reducing aroma volatilisation. Stir the yolk into natto before adding tare. The texture becomes silkier and the smell is noticeably softer.
• Strong extra seasoning: more tare, extra soy sauce, or a dash of sesame oil shift the flavour focus. More seasoning does not mask the natto — it provides more total flavour, so the aroma component becomes a smaller proportion of what you register.
• Hikiwari natto instead of itohiki: crushed bean natto has less stringiness and a milder flavour. If itohiki whole beans are your default, switching to hikiwari is the single most effective intensity-reduction choice before you start with condiments.

Most people who dislike natto on first encounter find it genuinely enjoyable within 3–5 exposures. The adaptation is largely olfactory — the brain stops tagging the ammonia note as novel and therefore unpleasant.

Storage and Handling

Natto is almost always sold frozen outside Japan. Search frozen natto on Amazon — look for Mitsubishi (Mito brand) or Meiji. Frozen natto keeps for 3 months and quality is excellent.

• Thawing: thaw overnight in the refrigerator, never at room temperature or in the microwave. After thawing, the liquid in the container separates — stir well before using. The strings may be slightly less stretchy than fresh, but flavour and nutritional value are intact.
• Do not refreeze after thawing. The texture degrades significantly on a second freeze.
• Refrigerator life: thawed or fresh natto, use within 7–10 days of the use-by date. Older natto develops a stronger ammonia smell and softer bean texture — still edible, but more intense.
• Freshness check: natto smells strong normally — that is expected. Discard if the smell shifts from earthy-ammonia to putrid or sour, or if you see grey or green discoloration on the beans. White film on the surface is normal Bacillus subtilis and is not a spoilage sign.

Frequently Asked Questions

How do you eat natto?

Stir natto 40–50 times before adding any condiments — this develops the polyglutamic acid strings and amplifies umami. Then add the included tare and karashi mustard and stir 10–15 more times. Serve over hot rice (150–180g cooked rice per 40–50g pack) with chopped spring onion on top. Eat by taking both rice and natto in each bite — don't mix them together beforehand.

How many times should you stir natto?

The standard is 40–50 times before seasoning, then 10–15 more times after adding tare and karashi. Stir before adding condiments, not after — salt in the tare draws moisture away from the beans and inhibits string development if added too early. The strings should be glossy, white, and stretch 10–15cm when you lift your chopsticks.

Can you cook natto?

You can use natto in cooked dishes, but do not heat it above 70°C. Above that temperature, nattokinase — the primary health-relevant enzyme — denatures, and Bacillus subtilis probiotics die. For natto pasta and fried rice, add natto off the heat after the dish is cooked and use residual warmth only. For miso soup, add natto after dissolving the miso, below boiling.

What do you put on natto?

The included tare (soy-based sauce) and karashi (hot Japanese mustard) are the baseline. Classic additions: chopped negi (spring onion), raw egg yolk, grated daikon, kimchi, pickled ginger, kizami nori. The egg yolk is particularly effective for beginners — it coats the beans, softens the aroma, and enriches the texture simultaneously.

Can you eat natto raw?

Natto is already fermented — not raw in any meaningful sense. The soybeans are fully cooked before fermentation with Bacillus subtilis, and the fermentation further transforms them. Natto is safe to eat directly from the package with no additional cooking. The only consideration is temperature: nattokinase is best preserved when natto is not heated above 70°C.

What does natto go with?

Rice is the primary pairing — 1 pack (40–50g) over 150–180g cooked rice. Beyond that: nori in maki sushi, pasta with butter and soy, grain bowls (farro, quinoa, brown rice), avocado toast, and miso soup. Pairings that reduce intensity for beginners: pickled ginger, kimchi, avocado, karashi mustard, and strong seasoning. For what natto is and its flavour profile, see the What Is Natto guide.

How do you eat natto for the first time?

Use hikiwari (crushed bean) natto — milder flavour, less stringy, easier to try. Stir well, add the included tare and karashi, then serve over hot rice with plenty of chopped spring onion and a raw egg yolk. The heat from the rice warms the natto gently; the egg yolk softens both aroma and texture. Expect 3–5 exposures before the smell stops registering as intrusive.

How much natto should you eat per day?

One pack (40–50g) per day is standard in Japan. This provides roughly 5g of protein, 200–350mcg of vitamin K2 (MK-7), and a working dose of nattokinase. The only caution: people taking warfarin or other vitamin K antagonist blood thinners should consult their doctor — natto's very high K2 content can shift INR levels unpredictably. For everyone else, one pack daily is well within normal dietary range.

Where to Go Next

• What Is Natto — the entity guide: fermentation biology, four types, 870mcg K2, nattokinase
• Natto Gohan Recipe — the complete method with rice ratios and topping combinations
• What Is Nori — nori in natto maki and as a topping; why it pairs with fermented flavours
• How to Use Miso — the same temperature rule applies; miso soup technique for natto ochazuke and natto miso soup
• Japanese Pantry — how natto fits into the broader Japanese ingredient system
• Rice Hub — Japanese short-grain rice for natto gohan; variety and cooking method guide
• Guides Hub — all ingredient and technique guides
• How to Make Natto — home production with Bacillus subtilis incubation