Chilled Kudzu Starch Noodles with Sweet Kinako Syrup

Chilled Kudzu Starch Noodles with Sweet Kinako Syrup

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A refreshing Japanese summer classic, these translucent kudzu starch noodles are gently boiled, shocked in ice water, and served in a fragrant toasted soybean syrup. The contrast between the slippery, springy noodles and the nutty, caramel-like syrup makes this an elegant cool-weather treat across Japan.

Prep Time20 mins
Cook Time10 mins
Total Time30 mins
Servings4
Yield4 servings

Nutrition Facts

Per serving (estimated)

  • 220 kcalCalories
  • 2 gFat
  • 0.3 gSaturated Fat
  • 52 gCarbs
  • 1 gFiber
  • 34 gSugar
  • 2 gProtein
  • 125 mgSodium
  • 60 mgPotassium
  • 30 mgCalcium
  • 1 mgIron
  • 0 mgVitamin C
  • 5 mcgVitamin A

Ingredients

For the noodles

  • 1 cup kudzu starch (or arrowroot starch)
  • 3/4 cup cold water
  • 1/2 tsp vegetable oil
  • 1/4 tsp fine salt

For the kinako syrup

  • 1/2 cup kinako (roasted soybean flour)
  • 3/4 cup granulated sugar
  • 1 cup water
  • 1/8 tsp fine salt

For serving

  • 4 cups ice water, for the bath
  • 1 tbsp grated fresh ginger, optional
  • 3 tbsp kuromitsu brown sugar syrup, optional
  • 2 tbsp extra kinako, for dusting

Directions

  1. Combine the kudzu starch and salt in a bowl, then gradually pour in the cold water while whisking constantly to form a smooth, lump-free slurry.
  2. Stir in the vegetable oil, transfer the mixture to a small saucepan, and cook over medium-low heat while whisking continuously for 2-3 minutes until it thickens into a glossy, translucent paste.
  3. Spread the hot paste into a thin, even 1/4-inch layer on a parchment-lined sheet pan and refrigerate for 15 minutes until firm and sliceable.
  4. Bring a wide pot of water to a rolling boil, then use a sharp knife or bench scraper to cut the firm kudzu sheet into thin 1/8-inch strips, dropping them directly into the boiling water.
  5. Simmer the noodles for 2 minutes until completely translucent and springy, then drain and immediately transfer them to a bowl of ice water to halt the cooking and lock in their snappy chew.
  6. Meanwhile, prepare the kinako syrup by whisking together the kinako, sugar, water, and salt in a small saucepan over low heat until smooth, glossy, and slightly thickened, about 4 minutes.
  7. Strain the chilled noodles from the ice water and divide them between four chilled bowls, then drizzle generously with the warm kinako syrup.
  8. Top each bowl with a small dusting of fresh kinako, a pinch of grated ginger if using, and a thread of kuromitsu for extra caramel depth.
  9. Serve immediately with chopsticks and a spoon so diners can alternate bites of cool noodles and sweet syrup.

Cook’s Notes

  • Pure arrowroot or sweet potato starch can replace kudzu starch in equal amounts, though kudzu yields the clearest, most elastic noodles.
  • Strain the kinako syrup through a fine mesh sieve for a silkier finish that clings to the noodles.
  • For an even more cooling dessert, chill the kinako syrup thoroughly in the refrigerator before drizzling.
  • Eat the noodles within 30 minutes of shocking for the snappiest texture, as they will gradually soften in the syrup.
  • A small pitcher of extra cold water on the side lets diners rinse off excess syrup between bites.
DessertSweet