Wasabi and Sushi: More Than Just a Spicy Kick|Tokyo Sushi School

Why is wasabi always served with sushi?
For many people, wasabi seems inseparable from sushi. But have you ever wondered why it is there? Let's take a closer look at this unique Japanese condiment.

What Exactly Is Wasabi?

Wasabi (Wasabia japonica) is a perennial plant native to Japan. It grows best in cool climates and clear running water, which is why traditional wasabi farms are often found in mountain streams.

Wasabi has been used in Japan for centuries. Records from the Heian period (8th - 12th century) describe its use as a medicinal herb. By the Edo period, it had become a standard accompaniment for sushi and sashimi.

Nutritional Benefits

Fresh wasabi is more than just a flavor booster - it contains:

Vitamin C – supports the immune system and helps protect against aging
Potassium – helps regulate blood pressure
Calcium – important for strong bones and teeth
Iron – essential for healthy blood

Health Effects of Wasabi

The spicy compound in wasabi, allyl isothiocyanate, has several beneficial effects:

Stimulates appetite by activating digestion
Kills bacteria helping prevent food poisoning
Reduces inflammation easing conditions like arthritis or sinus issues
Supports immunity and cold prevention
Promotes healthy skin through antioxidant effects

No wonder wasabi has been valued in Japanese cuisine for centuries.

Types of Wasabi

There are two main kinds of wasabi you'll encounter:

Hon-wasabi (true wasabi):

freshly grated from the plant's rhizome, with a refined aroma and a short-lived, clean spiciness. It is considered a luxury ingredient.

Prepared wasabi (neri-wasabi):

made from a blend of horseradish, starch, and sometimes a small amount of true wasabi. It is less intense, inexpensive, and widely available in tubes worldwide.

Why Sushi Needs Wasabi

There are three main reasons wasabi is paired with sushi:

1To neutralize fishy odors

The compounds in wasabi suppress the smell of raw fish proteins.

2To balance flavor

Its sharp, refreshing spiciness cuts through the richness of fatty fish, leaving a clean finish.

3For natural food safety

Wasabi's antibacterial properties help prevent foodborne illness, an important benefit in the days before refrigeration.

In Conclusion

Wasabi is far more than a spicy condiment?it is a traditional Japanese ingredient with medicinal roots, nutritional value, and a vital role in sushi culture. It enhances taste, freshness, and even safety, making it an indispensable partner to sushi and sashimi.