Toro Sushi: Why Fatty Tuna Is So Special in Japan

Toro is one of the most celebrated ingredients in Japanese sushi. With its delicate marbling, soft texture and rich flavour, a piece of toro nigiri can feel almost as though it melts on the tongue.

Today, fatty tuna is associated with premium sushi and special dining experiences. Surprisingly, however, toro was not always considered a prized part of the fish.

What Is Toro?

Toro refers to the fatty parts of tuna. It is usually taken from the belly and other areas where the fish carries more fat.

Japanese sushi menus commonly distinguish between three main tuna cuts:

• Akami is the lean, deep-red meat of the tuna. It has a clean flavour and a firmer texture.

• Chutoro is medium-fatty tuna. It combines the freshness of akami with the gentle sweetness and softness of fat.

• Otoro is the richest and fattiest cut, usually taken from the belly area closer to the head. Its pale colour and fine marbling give it an especially tender texture.

The balance of meat and fat creates a different experience in each cut. Akami is clean and direct, chutoro is balanced, and otoro is exceptionally rich.

Why Does Toro Taste So Special?

The appeal of toro comes from its marbling.

The fine layers of fat soften the texture of the tuna and give it a smooth, rounded flavour. Rather than tasting heavy, good toro has a gentle sweetness followed by the characteristic umami of tuna.

Because toro is rich, it does not require strong seasoning. A small amount of soy sauce and a touch of wasabi are usually enough to complement its natural flavour.

This simplicity is an important part of Japanese sushi culture: the ingredient remains the focus, while the rice, seasoning and preparation support its character.

Toro Was Not Always a Luxury

Tuna has been eaten in Japan since ancient times and became widely popular during the Edo period, when lean tuna was often marinated in soy sauce and served as sushi.

The fatty belly meat, however, was once considered far less valuable.

During the Edo period, toro was difficult to preserve and spoiled more easily than lean tuna. It was therefore not regarded as suitable for serving to customers in the same way as akami. Instead, the fatty parts were often cooked with Japanese leek and soy sauce in a dish known as negima-nabe.

As preservation and refrigeration methods improved, toro could be handled more carefully and enjoyed raw. Its rich flavour and soft texture gradually became highly appreciated.

The part of the tuna that was once inexpensive is now one of the most sought-after ingredients in the world of sushi.

How to Enjoy Toro Sushi

Toro is best enjoyed slowly and simply.

When eating toro nigiri, try tasting the first bite without adding too much soy sauce. This allows you to notice the texture, sweetness and balance between the tuna and sushi rice.

When using soy sauce, lightly touch the fish side rather than soaking the rice. Too much soy sauce can overpower the delicate flavour and may cause the rice to fall apart.

Toro can also be enjoyed in several different forms:

• Toro nigiri, served over seasoned sushi rice

• Toro sashimi, allowing the texture and flavour of the tuna to stand alone

• Negitoro maki, combining chopped toro with spring onion

• Toro gunkan, with chopped fatty tuna wrapped in nori

• Toro tartare, prepared with additional seasoning for a richer flavour

Each preparation highlights a different quality of the same ingredient.

Enjoy Toro at ICHIZEN in Zurich

ICHIZEN Japan Restaurant offers a special selection of toro dishes, including Toro Nigiri, Sashimi Toro, Toro Gunkan and Toro Spicy Tartare.

Whether you prefer the simplicity of nigiri, the pure flavour of sashimi or the combination of toro and spring onion in a maki roll, each dish offers a different way to experience fatty tuna.

Special Offer: Toro (Fatty Tuna)

Toro is offered as a special menu selection, so availability may vary according to supply.

Visit ICHIZEN in Zurich to experience one of the most distinctive ingredients in Japanese sushi.