Sanuki udon is a noodle soup dish popular in the Kagawa Prefecture particularly for special occasions. The main ingredients are udon served al dente with tuna and kelp.
Sanuki udon are named after the previous name of the Kagawa Prefecture, Sanuki.
Udon is a type of thick wheat-flour noodle of Japanese cuisine.
Udon is usually served hot as noodle soup in its simplest form as kake udon, in a mildly flavoured broth called kakejiru which is made of dashi, soy sauce (shōyu), and mirin. It is usually topped with thinly chopped scallions. Other common toppings include tempura, often prawn or kakiage (a type of mixed tempura fritter), or abura age, a type of deep-fried tofu pockets seasoned with sugar, mirin, and soy sauce. A thin slice of kamaboko, a halfmoon-shaped fish cake, is often added. Shichimi can be added to taste.
The flavor of broth and topping vary from region to region. Usually, dark brown broth, made from dark soy sauce (koikuchi shōyu) is used in eastern Japan, and light brown broth, made from light soy sauce (usukuchi shōyu) is used in western Japan. This is even noticeable in packaged instant noodles, which are often sold in two different versions for east and west.