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Ankake Udon (あんかけうどん)

Ankake Udon (あんかけうどん)

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Winter udon with staying power: clear dashi, a little soy and mirin, and just enough starch to make the broth cling without turning heavy.

Soups & Stews
Japanese
Weeknight
Comfort Food
Quick Meal
15 min
Active Time
25 min cook40 min total
Yield2 servings

Ankake udon is winter food because it holds its warmth. Plain udon broth slips away quickly, as good broth should. Thicken it lightly, and it coats each noodle, carrying dashi, soy, mirin, and ginger with every bite. A small mercy, which is often the best kind.

People make the thickening sound delicate. It isn't. The one detail that decides it is the slurry: kuzu or potato starch mixed with cold water, stirred in slowly while the broth is moving. Add dry starch straight to hot broth and it clumps, because the outside seizes before the inside can disperse. Cold water gives it time to open evenly. That is the whole secret, not a ceremony.

Keep the broth clear and restrained. This is not a stew, and the starch is not there to hide anything. We build the flavor from dashi first, then season it with the two quiet hands of washoku, soy sauce and mirin. Grated ginger at the end wakes the bowl without shouting. Serve it hot, with room in the bowl, and let the shine of the broth tell you the meal is ready.

Ankake, a glossy thickened sauce or broth, appears across Japanese cooking and became especially useful in the cold months because it keeps food warm longer at the table. In Kansai, and particularly around Kyoto, lightly thickened dashi is often paired with ginger for noodle dishes and simple winter bowls. Kuzu starch, made from the root of the kudzu plant, has long been prized in Japanese cooking for its clean texture, while potato starch became the common household stand-in.

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Ingredients

konbu (dried kelp)

Quantity

1 piece (about 8g)

cold water

Quantity

4 cups

katsuobushi (bonito flakes)

Quantity

18g

fresh or frozen udon noodles

Quantity

2 portions (about 400g total)

usukuchi (light soy sauce)

Quantity

2 tablespoons

mirin

Quantity

1 tablespoon

sea salt

Quantity

1/2 teaspoon

plus more to taste

kuzu starch or potato starch

Quantity

2 tablespoons

cold water

Quantity

3 tablespoons

for the slurry

fresh ginger

Quantity

2 teaspoons

grated

scallion

Quantity

2 tablespoons

thinly sliced

kamaboko (optional)

Quantity

2 slices

Equipment Needed

  • Medium pot for dashi
  • Fine-mesh strainer lined with cloth
  • Separate pot for udon
  • Small bowl for mixing the starch slurry
  • Grater for fresh ginger

Instructions

  1. 1

    Make the dashi

    Wipe the konbu with a damp cloth, but don't wash it. Put it in the cold water and bring it up slowly over low heat, about ten minutes. Pull the konbu when the water trembles and small bubbles climb the sides of the pot. Let it boil with the kelp in and the stock can turn bitter and slick, which is a poor bargain for impatience.

  2. 2

    Steep the flakes

    Bring the water just to a gentle boil, add the katsuobushi all at once, and take the pot off the heat. Leave it alone for two or three minutes, until the flakes sink. Strain through a cloth or fine sieve and let it drip. Don't squeeze, because pressing the flakes pushes cloudy, oily flavors into the clear stock you were protecting.

  3. 3

    Season the broth

    Return the dashi to a clean pot and add the usukuchi, mirin, and salt. Warm it gently and taste. It should be clear, savory, and a little more seasoned than a plain soup, because the noodles will soften it. If it tastes thin, give it more dashi or a pinch of salt, not a heavy hand with soy.

  4. 4

    Cook the udon

    Cook the udon in a separate pot according to the package directions, then drain well. Fresh udon usually needs only warming through, while frozen udon turns supple after a short boil. Keeping this pot separate protects the broth from extra starch, so the final thickening stays clean and under your control.

  5. 5

    Thicken the broth

    Mix the kuzu or potato starch with the 3 tablespoons cold water until smooth. Bring the seasoned dashi to a lively simmer and stir in the slurry slowly, a little at a time, while the broth keeps moving. Simmer for one minute, until the broth turns glossy and lightly coats the spoon. If it sits too thick, add a spoonful of hot water or dashi. Ankake should cling, not sit like paste.

    Always stir the slurry once more before adding it. Starch settles quickly, and the last spoonful in the cup is often the strongest.
  6. 6

    Assemble the bowls

    Divide the drained udon between two warmed bowls. Ladle the thickened broth over the noodles, setting a slice of kamaboko on each bowl if using. Finish with grated ginger and sliced scallion. Add the ginger at the end so its fragrance stays bright and clean against the dashi.

Chef Tips

  • Use kuzu if you have it. It gives the broth a clear, elegant gloss and a softer cling. Potato starch is a sensible stand-in and the way many home kitchens make the dish.
  • Don't thicken the broth until the noodles are ready. Ankake tightens as it stands, and the best bowl is served just after the broth turns glossy.
  • For a meatless table, make the dashi with konbu and dried shiitake. Soak one piece of konbu and two dried shiitake in the water overnight, then warm gently and strain. That's honmono from the temple kitchen, not a compromise.

Advance Preparation

  • The dashi can be made up to two days ahead and kept refrigerated. Reheat it gently before seasoning.
  • The konbu can soak in the cold water overnight in the refrigerator for a rounder stock.
  • Grate the ginger just before serving. Its fragrance fades quickly once it is grated.

Frequently Asked Questions

Nutrition Information

1 serving (about 690g)

Calories
350 calories
Total Fat
1 g
Saturated Fat
0 g
Trans Fat
0 g
Unsaturated Fat
1 g
Cholesterol
5 mg
Sodium
2170 mg
Total Carbohydrates
73 g
Dietary Fiber
3 g
Sugars
4 g
Protein
10 g

Note: Chef personas and recipes are created with AI assistance. Cook with care: follow safe food-handling practices, check doneness with a thermometer when needed, and adapt for allergies and your kitchen.

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