Food

How to Make Konnyaku: Japanese Konnyaku Recipe

Written by MasterClass

Last updated: Aug 21, 2024 • 1 min read

Konnyaku is a Japanese food product sometimes sold as "yam cake," but it actually comes from the konjac plant.

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What Is Konnyaku?

Konnyaku is the Japanese name for the starchy tuber of the konjac plant. Konnyaku, which has been grown in China since ancient times, was introduced to Japan in the sixth century via Korea as a medicinal food. Konnyaku is high in glucomannan, a dietary fiber that gives konnyaku its texture. Today, blocks of konnyaku cakes can be found at Japanese grocery stores.

Although it is called the konnyaku potato, konnyaku is actually from the Araceae (Philodendron) family, like yams and taro. The underground tuber—sometimes incorrectly called a corm—is dried and ground into flour, which makes the toxic root safe to eat. It is then mixed with water and calcium hydroxide to form a jelly-like substance, or it is cut and packaged as konnyaku noodles, also called ito konnyaku or shirataki. Konnyaku can be either white or gray, a result of the addition of seaweed powder.

4 Ways to Use Konnyaku in Japanese Cooking

Konnyaku is useful in many different Japanese dishes, from bento boxes to sweet konnyaku fruit jellies. These Japanese foods typically feature konnyaku:

  1. 1. Sukiyaki: Sukiyaki hot pot typically includes shirataki noodles made from konnyaku.
  2. 2. Oden: This winter dish typically features konnyaku cooked in dashi with tofu and vegetables, sometimes flavored with miso.
  3. 3. Sashimi: Sashimi konnyaku is meant to be eaten raw with wasabi and soy sauce. It has a more tender texture than cooked konnyaku and is sometimes dyed green to indicate that it has been flavored with citrus.
  4. 4. Ramen: You can use shirataki noodles as a low-calorie substitute for other noodles, like ramen.

Simple Japanese Konnyaku Recipe

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makes

prep time

5 min

total time

10 min

cook time

5 min

Ingredients

  1. 1

    Bring a medium pot of unsalted water to boil over high heat.

  2. 2

    Cut the konnyaku into cubes or slices.

  3. 3

    Add the konnyaku to the boiling water.

  4. 4

    When the water returns to a boil, cook for 3 minutes.

  5. 5

    Drain the konnyaku.

  6. 6

    The par-cooked konnyaku is now ready to add to stews, salads, or hot pot.

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