O-Toro | Bluefin Tuna

The Pinnacle of Sushi: O-Toro Bluefin Tuna

O-Toro is the most prized cut of the Bluefin Tuna, celebrated for its extraordinary marbling and buttery umami flavor. Sourced from the belly of the fish, this premium cut offers a rich, sweet note and a signature "melt-in-your-mouth" texture that is unmatched by leaner cuts like Akami or the mid-belly Chu-Toro.

At Meat N’ Bone, we believe in providing the best-in-class option for every category. Our O-Toro is 100% wild-caught using long-line methods in Pacific waters, with seasonal availability from Australia. It is never injected with additives or altered, ensuring you experience the tuna exactly as nature intended.

Sourcing & Freshness

Sourcing premium Bluefin Tuna is a complex process. To ensure the highest quality, our tuna is flash-frozen immediately after harvest. This process locks in the peak freshness, flavor, and nutrition of the fish.

Storage Note: O-Toro requires optimal conditions to maintain its vibrant color and delicate texture. We recommend storing the fish in a super-freezer or the coldest part of your refrigerator (below 40°F). For the best possible experience, consume the O-Toro as soon as possible after thawing.

Chef's Preparation Tip

To achieve the ultimate sushi experience, our Master Sushi Chef recommends tenderizing the O-Toro with shallow cuts on each side before serving. This technique helps the fat "melt away" with every bite, enhancing the delicate mouthfeel.

Understanding Tuna Cuts & Grades

The value of tuna is determined by its fat content (marbling), similar to high-end beef.

• O-Toro (Big Fatty): The most marbled and expensive cut, taken from the under-belly. It offers a sweet, buttery flavor and soft texture.
• Chu-Toro (Medium Fatty): The cut between the Akami and O-Toro. It has a good mix of fat and meat, making it less chewy than Akami but less rich than O-Toro.
• Akami (Lean): The lean, deep-red meat from the back and sides. It has a clean, meaty flavor and firm texture.

Like red meat, tuna is strictly graded. The highest grade is #01, which takes into account appearance, size, color, texture, and fat content. Our O-Toro meets the highest standards for sushi-grade quality.

Thawing & Handling Instructions

Keep frozen until ready to use. Thaw slowly under refrigeration.

• DO NOT leave soaking in water, as it will affect the flavor and texture.
• DO NOT leave thawed fish in a vacuum-sealed bag for more than 24 hours.
• Consume within 24 hours of thawing for best results.

Frequently Asked Questions

Is this O-Toro safe for raw consumption?

While "sushi grade" is not a regulated certification, our O-Toro is handled to the highest standards and is as safe as raw fish gets for consumption. It is particularly prized for sushi and sashimi.

What is the difference between O-Toro and Chu-Toro?

O-Toro is the belly cut with the highest fat content, offering a buttery, melt-in-your-mouth texture. Chu-Toro is the mid-belly cut with a balance of fat and meat, providing a firmer texture than O-Toro but more richness than Akami.

Where is this tuna sourced from?

Our Bluefin Tuna is 100% wild-caught using long-line methods in Pacific waters. We also source from Australia during certain times of the year.

How should I store O-Toro?

O-Toro is delicate and requires optimal storage. Keep it in a super-freezer or the coldest part of your refrigerator (below 40°F). Consume as soon as possible after thawing for the best color and texture.

What grade is this tuna?

Our tuna meets the #01 grade standards, the highest grade for tuna, which considers appearance, size, color, texture, and fat content.

How do I prepare O-Toro for sushi?

For the best experience, tenderize the O-Toro with shallow cuts on each side before serving. This helps the fat melt in your mouth. Slice against the grain for optimal texture.

Is this tuna flash-frozen?

Yes, our tuna is flash-frozen right after being harvested to lock in peak freshness, flavor, and nutrition.

Are there any additives in this tuna?

No, our O-Toro is 100% natural and never injected with any additives.