Udon are thick white wheat noodles with a chewy, slippery texture that absorbs broth flavour while retaining their own mild character. They are among Japan’s most versatile and widely eaten noodles, served hot in dashi broth, cold with dipping sauce, or stir-fried.
Topped with everything from tempura to raw egg. Regional styles vary considerably, a nd the best udon in Japan is found in Kagawa Prefecture (Shikoku), where the dish is a point of local pride.
Quick Answer: Udon: Thick wheat noodles, Japan’s most widely eaten noodle type after ramen. Mild, chewy, and versatile. Best known regional style: Sanuki udon from Kagawa. Available everywhere from convenience stores to dedicated udon-ya restaurants. Inexpensive by Japanese standards (500 to 1,200 yen for a bowl). See the what to eat in Japan for the broader Japan food guide.
Udon vs Ramen vs Soba
Japan’s three main noodle types serve different purposes. The ramen guide uses wheat noodles in a flavoured broth (tonkotsu, shoyu, miso, shio) topped with generous portions. Udon uses thick wheat noodles in a lighter dashi broth with simpler toppings. Soba uses thin buckwheat noodles with a nuttier flavour. Udon is the mildest, most accessible, and most forgiving for people who do not eat pork or heavy broths. See the Japan vegetarian guide for vegetarian options.
Types of Udon
Kake Udon
The most basic udon: thick noodles in a hot dashi broth with a simple topping of green onion and kamaboko (fish cake). The broth base varies regionally: in the Kansai (Osaka/Kyoto) area, the broth is lighter and slightly sweet from kombu seaweed; in the Kanto (Tokyo) area, it is darker and more soy-sauce-heavy.
Tempura Udon (Ten-Udon)
Hot udon with a large piece of prawn tempura (or mixed tempura) placed in or beside the bowl. One of the most popular udon varieties and a good introduction because the tempura adds textural contrast and satisfying richness. See that to eat in Japan for the Mura context.
Tsukimi Udon
Hot udon topped with a raw egg, which poaches slightly in the hot broth when left for a minute. The name means moon-viewing udon, the egg representing the full moon. Simple and very good.
Zaru Udon (Cold)
Cold udon noodles served on a bamboo tray, with a cold dipping broth (tsuyu) in a small cup beside them. The noodles are dipped into the tsuyu before eating. Refreshing in summer. Ordered at the table or self-service counter.
Kama-age Udon
Udon is served directly from the cooking pot (kama) in hot water, with a separate dipping broth. The noodles are at their freshest and most slippery immediately after cooking—a Kagawa specialty.
Yaki Udon
Stir-fried udon noodles with vegetables, meat or seafood, and a sauce (usually soy-based). A hearty option found at izakayas and casual restaurants. See the izakaya guide for the izakaya context.
Regional Udon Styles
Sanuki Udon (Kagawa Prefecture)
The most famous udon in Japan. Sanuki udon from Kagawa (the smallest of Japan’s prefectures, on Shikoku island) is known for its firm, chewy texture and its thin, intensely flavoured cold dipping broth. Kagawa residents eat udon almost daily, and the prefecture has the highest udon restaurant density per capita in Japan. A pilgrimage to Kagawa specifically for udon is a legitimate food travel activity.
Inaniwa Udon (Akita Prefecture)
Thin, flat, handmade udon from northern Honshu. More delicate than Sanuki, it is often served cold with a dipping broth—one of Japan’s three famous udon types alongside Sanuki and Mizusawa.
Mizusawa Udon (Gunma Prefecture)
Firm, slightly translucent udon with a concentrated flavour, served cold.—a regional specialty from the mountains of Gunma.
Tokyo Style
Tokyo udon tends to have a darker, soy-sauce-forward broth compared to the lighter Kansai style. The Tokyo style is more accessible to visitors accustomed to soy-based flavours.
How to Order Udon
Restaurant (Udon-ya)
At a dedicated udon restaurant, choose your noodle type (hot or cold), your topping, and your size (regular/large). Pay at the register before or after eating, depending on the system. Some udon shops have plastic food displays outside or picture menus; point if needed.
Self-Service Style
Many udon shops in Kagawa and across Japan use a cafeteria-style service: take a tray, choose your noodle size and base, add toppings from a selection, and pay at the end of the counter. The lowest-cost way to eat udon (sometimes as cheap as 150 to 300 yen per bowl in Kagawa).
Where to Eat Udon in Tokyo
Dedicated udon chains (Marugame Seimen, Hanamaru Udon) are everywhere in Tokyo and offer reliable, fresh udon at 400 to 700 yen. For higher quality, look for independent udon-ya in Koenji, Nakano, and the areas around Ueno. See the Tokyo food guide for overall Tokyo food.
Nearby Guides
- ramen guide
- sushi guide
- What to eat in Japan
- Tokyo food guide
- Osaka food guide
- Japan vegetarian guide
- Best places to visit in Japan
FAQ
Is udon vegetarian?
The noodles themselves are vegetarian (made with wheat flour, water, and salt). The dashi broth is traditionally made with katsuobushi (dried bonito flakes), a fish-derived ingredient. Some restaurants offer kombu-only dashi (vegan) on request; convenience store udon cups often use vegetable broth. See the Japan vegetarian guide for Japan vegetarian dining guidance.
What is the difference between udon and soba?
Udon noodles are thick, white, and made from wheat flour. They are mild in flavour and chewy in texture. Soba noodles are thin, grey-brown, and made from buckwheat flour. They have a nuttier, earthier flavour. Both are served hot in broth or cold with dipping sauce. Udon is more widely available and generally cheaper.
Is the udon in Kagawa really that much better?
Most serious Japanese food travellers say yes. The freshness of noodles made daily, the quality of local wheat and water, and the culture of careful preparation combine to produce udon that is meaningfully better than what is typically served elsewhere. A day trip to Kagawa from Osaka, or a detour via the Shinkansen to Okayama and then a train to Takamatsu, is considered worthwhile by dedicated udon enthusiasts.
