What Is Wasabi?

Last updated on Feb 17, 2025
Michale LeRoy

Wasabi is a pale green condiment with a paste-like texture and a pungent bite. If you've ever been dared to eat a spoonful of wasabi, you probably haven't forgotten its tingling, sinus-clearing qualities. Amazingly, this potent condiment creates a magical burst of umami flavor when it's mixed in small doses with soy sauce and added to a plate of sashimi or nigiri. We'll explore this unique condiment a little further to determine why it has such a strong flavor and what defines truly authentic wasabi paste.

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What Is Wasabi Made Of?

What Is Wasabi Made Of?

Real wasabi is made from the grated stem of the wasabi plant, which forms a smooth paste similar to freshly grated ginger. But that's not the whole story when it comes to wasabi. You might be surprised to learn that many wasabi products used here in the US are not made from real wasabi. Check the ingredients on a bag of wasabi powder and you'll probably see a combination of horseradish and mustard used to create a pungent flavor and food coloring used to make the product green. Because the wasabi plant is difficult to cultivate and labor-intensive to harvest, regular horseradish is commonly used in its place.

If you have the chance to sample real wasabi paste, we definitely recommend it but don't toss out all your wasabi products just yet. Wasabi made from horseradish (nicknamed Western wasabi) is still a popular condiment. No plate of sushi rolls would be complete without a little dab of wasabi on the side, even if its main ingredient is horseradish. Western wasabi is more economical than true wasabi and it has a long shelf-life, making it a convenient staple for restaurants to keep on hand.

Where Does Wasabi Come From?

Where Does Wasabi Come From?

The wasabi plant is native to Japan. Despite it being hard to cultivate, there are adventurous growers outside of Japan who are trying to master the little-known art of growing wasabi. Thanks to their ingenuity, it's becoming much easier to source the real thing. You probably won't find real Japanese wasabi at the local grocery store, but a simple internet search can put you in touch with a specialty store or online grower.

How Is Wasabi Grown?

The wasabi plant is a type of root vegetable called a rhizome. It prefers cool temperatures and a steady supply of fresh, running water. For this reason, wasabi is often grown in mountainous regions of Japan near natural streams. The large-leafed plants can take up to two years to form a rhizome that's suitable for harvesting. After the plant has grown and shed enough stalks, a green cone-like stem becomes visible at the base, similar to the leaf sheaf that forms on a palm tree. Leaves and stems are removed and the cone-like stem that is left over is used for wasabi.

What Does Wasabi Taste Like?

Japanese wasabi is said to have a fresher, more complex flavor than Western wasabi made from horseradish. It's herbaceous with a sweet aftertaste. Wasabi made from horseradish creates more heat than actual flavor, and it irritates the mucous membranes due to a compound called allyl isothiocyanate. Wasabi, horseradish, and mustard all contain this chemical.

Is Wasabi Spicy?

Wasabi is often described as being spicy, but it's not the same type of spiciness that you experience when you eat a hot pepper. Unlike capsaicin (the compound found in spicy peppers) which burns the tongue, wasabi creates a tingling heat and irritation in the sinuses. This is why you won't see wasabi listed on the hot pepper scoville scale.

Is Wasabi the Same as Horseradish?

While both belong to the Brassicaceae family, the wasabi plant and horseradish plant are not the same thing. Wasabi is a plant native to Japan and horseradish is a root vegetable that originated in Eastern Europe. These two plants share a spicy kick but offer a slightly different taste. Because of their similarity, horseradish root is used in place of Japanese wasabi in Western-style wasabi products.

Types of Wasabi Products

Types of Wasabi Products

If you'd like to add the flavor of wasabi to your menu, check out these common wasabi products:

  • Wasabi Paste: This is one of the most popular forms of wasabi and is commonly found in tubes or jars. Wasabi paste is convenient to use and is often served alongside sushi and sashimi. It can also be used as a condiment for grilled meats, noodles, or mixed into salad dressings for a spicy kick.
  • Wasabi Powder: Wasabi powder is made from dehydrated wasabi rhizomes and is typically reconstituted with water to form wasabi paste. It is versatile and can be used in various culinary applications, such as seasoning marinades, sauces, or dips. Wasabi powder is also commonly used in Japanese cooking to add flavor and heat to dishes.
  • Wasabi-Flavored Snacks: There are also a variety of snack products that are flavored with wasabi, such as wasabi peas, chips, or popcorn. These snacks offer a unique combination of heat and flavor, making them a popular choice for those who enjoy spicy foods.
  • Wasabi Mayonnaise: Wasabi mayonnaise is a creamy condiment that combines the rich flavor of mayonnaise with the spicy kick of wasabi. It can be used as a dipping sauce for sushi or seafood, spread on sandwiches, or mixed into salads for an extra burst of flavor.
  • Wasabi Pickles: These types of pickles are made by marinating cucumbers or other vegetables in a brine that includes wasabi. They offer a tangy and spicy flavor profile that pairs well with sandwiches, burgers, or as a side dish.

Each of these wasabi products provides a unique way to incorporate the bold and spicy flavor of wasabi into your culinary creations. Whether you prefer the convenience of wasabi paste or the versatility of wasabi powder, there are plenty of options to explore when it comes to using this distinctive condiment.

Wasabi FAQ

We answer commonly asked questions about wasabi below:

Do Grocery Stores Sell Real Wasabi?

No, real wasabi isn't commonly sold in grocery stores. You might find wasabi-flavored products at the grocery store, but true wasabi is a delicacy that is more commonly found in high-end restaurants or specialty markets.

How to Tell If Wasabi Is Fake?

It's easy to tell the difference between real wasabi and Western wasabi, which is sometimes called fake wasabi. True wasabi looks like freshly grated ginger with a natural green color. Western wasabi paste has a tacky texture and an artificial green color. Another way to spot fake wasabi is by checking the ingredient list – authentic wasabi should contain real wasabi root or powder, whereas Western wasabi may use horseradish or mustard with green food coloring.

Why Is Real Wasabi So Expensive?

The high cost of real wasabi can be attributed to several factors, including its slow growth rate of two to three years, strict cultivation requirements, and limited availability due to its specific growing conditions. The labor-intensive process of harvesting, grating, and preserving real wasabi further contributes to its premium price tag.


Wasabi is a versatile and flavorful condiment that is a must-have for sushi restaurants and other establishments serving Asian or fusion cuisine. With its vibrant green color and pungent taste, wasabi not only adds a pop of color to plates but also complements a wide range of seafood and other ingredients commonly found in Asian dishes. Keeping wasabi on hand ensures that restaurants can cater to the diverse tastes of their customers and elevate the flavors of their dishes with this popular Japanese condiment.

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