All recipes are for 2 servings unless noted. Oil is canola oil and salt is kosher salt.


Hiyashi kakeudon / cold udon noodles in soup

A cold udon noodle dish for hot days. You can enjoy endless variations by changing toppings. Here is a simple example with ginger, green onion and semi-cooked egg.


200 g dried udon noodles (or 300 g fresh/cooked udon noodles)

For kaketsuyu soup
600 cc strong katsuo-kobu dashi (5cm-square kombu kelp piece + handful katsuobushi bonito flakes and 650 cc boiling water)
2 tbsp soy sauce
2 tbsp mirin
Approx. 1/4 tsp sugar
Pinch salt

1 knob ginger
1 green onion
2 onsen tamago half-cooked eggs


Prepare onsen tamago.


Prepare strong katsuo-kobu dashi.
Break kombu into small pieces and place in a measuring cup or heat-resistant container.

Put katsuobushi, pour boiling water, and steep until katsuobushi sinks somewhat.


Prepare soup.
Strain 600 cc katsuo-kobudashi into another container.
Add soy sauce and mirin, and bring to boil.
Once boiling, simmer for 5-10 minutes to desired strength.
Taste, and add sugar and salt as necessary.

Place the container in a large container filled with ice to cool.


Meanwhile, boil plenty of water to cook udon.
Follow the udon package’s instructions, and boil udon.


Grate ginger, and thinly slice green onion.


When udon is done, soak in cold water.
When udon has cooled, rub surface with your hands until it becomes smooth and rinse water runs clear.
 Keep in water until serving.


Serve udon in each bowl, top with onsen tamago, ginger and green onion, and pour soup.

  • Dried udon noodles contain lots of salt, and boiling with lots of water is important to reduce the saltiness.
  • Rubbing udon noodles with your hands while rinsing ensures a smooth, slippery texture at the end. Poor quality udon will snap apart during this process.
  • Other suggested toppings: Aojiso perilla leaves (julienned), myoga ginger buds (thinly sliced), deep-fried agedama tempura batter, kamaboko fishcake (sliced), blanched vegetables (especially leafy ones), sweet-salty flavored usuage deep-fried tofu, and tempura in general.

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