The Difference: Somen vs Udon Noodles

When it comes to the noodles commonly eaten during the summer season in Japan, “Somen (そうめん)” is most often enjoyed in many Japanese households, where the noodles are chilled and typically served in a glass bowl with iced water, separately from broth, like (buckwheat) Soba noodles.

Somen Noodles

Both the broth of Somen and Soba, and even the broth of Udon, can be made by watering down the Mentsuyu soup base.

The Difference between Somen and Udon Noodles 

Actually, Somen is made with the same ingredients as Udon noodles, that is, wheat flour, salt and water, and in the case of the machine-made dry noodles, basically the difference between Somen and Udon noodles only comes from the difference in diameter.

Bundles of Dried Somen Noodles

In the definition by Japanese Agricultural Standard (JAS), the Somen noodle has a diameter of less than 1.3 mm, while the diameter of Udon noodles is 1.7 mm or more, and the wheat noodle whose diameter ranges from 1.3 mm to less than 1.7 mm is classified as “Hiyamugi (ひやむぎ)“.

Maruchan Instant Somen Noodle Soup

In the summer, Somen noodles are usually served chilled as shown above, but they can also be served hot in a bowl with soy-sauce-based dashi-rich broth, like Udon noodles. The hot noodle soup is generally called “Nyumen (にゅうめん)” and is also available in instant noodle form in Japan.

(Reference Page: Wikipedia 素麺 )

Tomo

Hi, I'm Tomo, a Japanese blogger living in Niigata Prefecture, Japan. For the purpose of enriching your life, I would like to introduce things about Japan on this blog, especially unique Japanese products, cooking recipes, cultures, and facts and trivia.

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