One small wooden bowl after another lands empty on a stack, the noodles ending up in the young woman’s mouth. In August 2026, competitive eater Tabeta Neru breaks the previous record for wanko soba eating at the traditional restaurant Azumaya by devouring an incredible 755 mini-portions of buckwheat noodles. That’s equivalent to about fifty regular bowls. Of course, such crazy quantities don’t normally end up on the table, but soba noodles are a Japanese staple alongside ramen and udon. Today, we’ll tell you exactly what soba are, why people with allergies or gluten intolerance should exercise caution, and how you can make Japanese buckwheat noodles yourself.
What Are Soba?
Soba (蕎麦) are thin Japanese noodles made from buckwheat flour. The word originally simply meant “buckwheat.” The noodles themselves used to be called soba-kiri, meaning “cut buckwheat.” A fitting name, since the dough is rolled out and cut into strips with a knife. That’s why handmade soba noodles are angular rather than round, like spaghetti, for example. However, this distinction has been lost. In everyday language today, everyone just says “soba,” and “soba” can sometimes even be used as a general term for noodles. But more on that later.
How long has soba been around?
Buckwheat has been grown in Japan for thousands of years, especially in cool mountainous regions such as the Japanese Alps. For a long time, it was eaten as sobagaki: a thick paste made from buckwheat flour and hot water, similar to polenta. The noodle form is much more recent. The earliest mention dates back to 1574 in the records of the Jōshō Temple, where soba-kiri was served to craftsmen after repair work.
However, the noodle dish didn’t become truly popular until the Edo period (1603–1868). At that time, soba stalls sprang up on every corner in Edo, now known as Tokyo. A bowl of buckwheat noodles was quick, inexpensive, and filling—essentially the city’s fast food. While soba was initially regarded as food for the poor, samurai later came to appreciate its nutty flavor as well. High-ranking feudal lords even had the city’s best noodles delivered to them by courier.
Soba, Udon, Ramen: What’s the Difference?
Udon and ramen are made from wheat flour. Ramen includes kansui, a sodium bicarbonate powder that gives the noodles their yellow color and chewy texture (learn more in our Ramen Guide) . Udon are made without kansui and are characterized by their thick texture.
Soba, on the other hand, is made primarily from buckwheat flour, along with water and usually a small amount of wheat flour as a binding agent. The result is a thin, gray-brown noodle with a nutty flavor. The texture is more tender and less chewy than that of ramen. You can read about the specific differences between all three here.
Are soba noodles really gluten-free?
Since buckwheat—contrary to its name—is not a grain but a member of the knotweed family, it naturally contains no gluten. That’s why soba noodles are often marketed as a gluten-free noodle alternative for people with gluten intolerance or celiac disease.
The problem: Pure buckwheat dough is brittle and breaks easily. Most manufacturers mix wheat flour into the dough to help the noodles hold their shape. That’s why you should always check the ingredient list carefully or ask at a restaurant. In Japanese supermarkets, the names and an official classification system (Japan Agricultural Standards, or JAS for short) reveal the blend ratio:
- Juwari soba (十割そば, “ten parts”) is made from 100% buckwheat. It’s flavorful but breaks easily. Only this type of soba is gluten-free. Our Juwari soba made from 100% buckwheat is one such example.
- Ni-Hachi soba (二八そば, “two-eight”) consists of 20% wheat and 80% buckwheat. This is the standard variety found in most soba restaurants and on supermarket shelves.
- JAS Premium (上級): At least 50% buckwheat content in the noodles.
- JAS Standard (標準): At least 40% buckwheat content
There are also soba noodles with even less buckwheat. They’re a good option for beginners to get used to the unfamiliar taste.
If you need to avoid gluten, be sure to check the ingredient list and not just the words “buckwheat noodles.” The dipping sauce can also be tricky: Classic soy sauce almost always contains wheat. If you want to eat gluten-free in Japan, you’ll need to ask very specific questions in restaurants, since even the cooking water is often reused multiple times.
Warning: Buckwheat Allergy Buckwheat can trigger an allergic reaction. Many Westerners are unaware of this because buckwheat is rarely part of the local diet here. In Japan, however, it is one of the most common causes of allergic reactions, and buckwheat must therefore be labeled accordingly. So if you’ve never eaten buckwheat before, try only a small amount the first time.
Just because it says “soba” doesn’t mean it’s actually soba
Much to the confusion of tourists, the word soba can mean not only “buckwheat noodles” but also “noodles” in general. For example, the following dishes are made with wheat noodles instead of soba:
- Yakisoba (焼きそば, “stir-fried noodles”) is made from yellow wheat noodles that are more reminiscent of ramen. It’s a popular street food prepared on large griddles.
- Chūka Soba (中華そば, “Chinese noodles”) is an older name for ramen. Here, too: wheat, not buckwheat.
- Okinawa Soba (沖縄そば) from southern Japan consists of thick wheat noodles in a pork broth that are almost reminiscent of udon and really have nothing to do with their nutty-tasting namesakes from the cool mountain regions.
Regional Soba Culture
Not all soba is the same. In eastern Japan, around Tokyo, people prefer to eat it cold with a rich, dark dipping sauce.
Many of the best-known varieties come from the Shinshu region (now Nagano), where buckwheat is grown in particularly large quantities. For manufacturers to be allowed to call their noodles “Shinshu soba,” they must contain at least 40% buckwheat.
We already told you about Wanko Soba right at the beginning: small portions are served to you over and over again until you place the lid on your bowl.
And in Izumo, in Shimane Prefecture, soba is served in several stacked bowls. By the way, slurping is expressly allowed with all varieties.
On New Year’s Eve, soba is served everywhere in Japan: Toshikoshi Soba (“New Year’s Eve soba”) symbolizes a long life and is eaten on New Year’s Eve without biting through the noodles. You can find more about this in our article on how to celebrate a Japanese New Year’s party.
How is soba made?
The process of making Japanese buckwheat noodles is called soba-uchi (“beating soba” or “kneading soba”). The process consists of several stages:
- Adding water: Water is gradually worked into the flour until crumbs form.
- Kneading: The crumbs are shaped into a smooth ball. True masters have mastered a kneading technique called kikumomi, in which the dough is folded in from the outside so that its shape resembles a chrysanthemum. This is primarily done to incorporate air into the dough.
- Rolling out: The dough is rolled out with a long rolling pin into a rectangle that is paper-thin.
- Folding and cutting: The sheet of dough is folded several times and cut into thin strips with a wide knife along a wooden board.
Recipe: Making Soba at Home
Just like other types of pasta, you can make soba at home. You can do this by hand using a large knife or with a pasta machine. The dough, however, is drier and crumblier than pasta dough, so don’t be surprised—just experiment a little with the ratio of wheat flour to buckwheat flour.
Soba Dough for Ni-Hachi Soba
Makes 2 servings (approx. 250 g of dough)
Ingredients:
- 200 g buckwheat flour (as finely ground as possible)
- 50 g wheat flour (Type 550)
- approx. 120 ml cold water
- Buckwheat flour or potato starch for rolling out the dough
⠀Preparation:
- Mix the buckwheat and wheat flour in a large bowl.
- Add the water in three portions, working it in with your fingertips after each addition until the dough looks crumbly, like damp sand. This ensures the water is distributed evenly.
- Shape everything into a ball and knead for 8 to 10 minutes until the dough is smooth. If it crumbles, add a little water, one tablespoon at a time. If it’s sticky, a pinch of flour will help.
- Flatten the ball, cover it, and let it rest for 20 minutes. The flour will absorb water during this time, making the dough easier to roll out later.
- On a floured surface, roll out the dough with a rolling pin into a sheet that’s as rectangular as possible, about 2 mm thick.
- Dust the sheet generously with flour or starch, fold it into several layers, and cut it into strips about 2 mm wide using a large, sharp knife. A long metal ruler can serve as a guide. Shake the noodles loose and dust them with flour once more.
With a pasta machine: Divide the dough into four pieces, flatten each one, and run it through the machine on the widest setting. Fold the sheet in half and repeat this a few times until it’s smooth. Then gradually adjust the machine to a narrower setting until you reach 2 mm. Finally, cut the pasta using the spaghetti or tagliolini attachment.
Cooking: Cook the noodles in plenty of boiling, unsalted water. Fresh soba only take 1 to 2 minutes. Then rinse them immediately with cold water. This step is important to remove the excess starch and prevent the soba from sticking together.
Tip: Fresh soba dough tastes best on the day it’s made. However, you can also freeze the cut noodles in portions, dusted with flour, and add them directly from the freezer to boiling water.
Tsukimi Soba
One of the most classic ways to prepare Japanese buckwheat noodles is Zaru Soba. In this dish, the soba is served cold and dipped in a savory sauce. You can find the recipe for this in our article on Japanese noodle recipes for summer. Today, we’re introducing Tsukimi Soba instead—a simple, warm soup. Tsukimi means “moon viewing,” because the egg yolk floats in the broth like a full moon. There’s also a version of this dish made with udon noodles. However, using soba gives it a nuttier flavor and makes it lighter.
Serves 2
Ingredients:
- 2 servings of fresh soba (homemade or, alternatively, 200 g dried, such as our Juwari soba)
- 700 ml dashi
- 3 tbsp soy sauce
- 2 tbsp mirin
- 2 very fresh eggs
- 2 scallions, thinly sliced into rings
- 1 sheet nori, cut into thin strips
- optional, to taste: grated daikon radish, bonito flakes
Preparation:
- Cook the soba in a separate pot (dried soba according to package instructions, usually 4 to 6 minutes), drain, and rinse under cold water. Do not cook it directly in the broth.
- Bring the dashi, soy sauce, and mirin to a boil in a pot. Then reduce the heat until the broth is just barely simmering.
- Divide the noodles between two bowls and pour the hot broth over them.
- Immediately and carefully slide the eggs into the boiling broth and let them sit for one minute so the egg whites set and the yolks remain soft.
- Top with scallions, nori, daikon radish, and bonito flakes—done.
Tip: For the vegetarian version, use dashi made from kombu instead of bonito. And if you need to avoid wheat, use a wheat-free soy sauce like tamari.
Frequently Asked Questions About Soba
Is soba healthy? Buckwheat provides plant-based protein, B vitamins, minerals, and fiber. Compared to regular wheat pasta, soba has fewer calories and carbohydrates. As with any food, however, it depends on the portion size and the side dishes.
Is soba vegan? The noodles themselves are, as are most homemade varieties. However, it’s best to check the ingredient list on store-bought soba to see if it contains eggs. For dishes, it depends on the broth: Classic dashi contains bonito and is therefore not vegan.
Can I prepare soba in advance? Unopened dried soba has a very long shelf life, just like other pasta. Cooked soba tastes best fresh. It will keep in the refrigerator for one day. You can freeze homemade, uncooked noodles if you dust them with a little flour or starch beforehand to prevent them from sticking together.
Why do my soba noodles stick together after cooking? Usually, it’s because they weren’t rinsed. Buckwheat releases a lot of starch during cooking. Rinse the noodles thoroughly under cold water after cooking.
Which type of soba should I try first? If you’re trying just one variety, start with soba that has a lower buckwheat content, such as our Shinshu soba. These are everyday soba noodles that are the best way to get used to the flavor. Juwari, made from 100% buckwheat, are the exciting next step to try later on.
And now it's your turn
Making soba takes a little practice, but your first batch of noodles doesn't have to look like they came from a soba shop in Nagano. It's perfectly fine if they turn out to be different thicknesses—that just proves they're handmade. And don't forget to slurp as you eat. That's actually encouraged when eating soba.
