Tuna belly is one of the most prized cuts of the fish. It is richer, more tender, and significantly more labor-intensive to prepare. At Fishwife, a single tin of tuna belly takes 37 minutes to clean, carve, and hand pack. The result of those 37 minutes is a completely different eating experience than what most people think of when they hear the words “canned tuna.”

What is Tuna Belly?

Tuna belly comes from the underside of the fish, specifically the fattiest section of the tuna. In Spain and throughout the world of conservas, this cut is often called ventresca de atún, or simply ventresca. The word comes from the Spanish word for belly and has become synonymous with some of the most prized tuna products.

Think about the way people talk about different cuts of beef. A filet mignon and a chuck roast both come from the same animal, but they offer entirely different textures, flavors, and experiences.

Tuna works much the same way. The belly contains significantly more fat than the rest of the fish. That additional fat creates the silky texture and rich mouthfeel that ventresca is known for. Many people describe tuna belly as almost buttery. Others compare it to sashimi or toro because of how tender it feels compared to standard tuna. While regular tuna flakes apart into smaller pieces, tuna belly often separates into large, delicate sections that practically melt as you eat them.

Why Does Tuna Belly Take 37 Minutes to Tin?

The number catches people off guard. Thirty-seven minutes to prepare a single can of tuna sounds almost ludicrous in a category often associated with convenience foods. But that figure helps explain why tuna belly falls into an entirely different category from standard tuna products.

The difference is craftsmanship. Every strip of tuna belly is individually handled and packed by hand. The fish is carefully selected, cleaned, arranged, and presented inside each tin, one piece at a time. That extra labor is what separates a premium tin of tuna belly from the tuna many people grew up eating.

Standard Tuna Prep vs. Tuna Belly Prep

The biggest difference between regular tuna and tuna belly happens long before the fish reaches the tin. The process begins the same way. Tuna arrives at the cannery as whole fish that have been frozen at sea. After the head and tail are removed, the fish is broken down into large loins. Those loins are then poached and cut down into workable sizes.

For standard tuna products, skilled operators clean the loins by removing bones, blood spots, connective tissue, veins, and darker meat. The goal is a clean, beautiful fillet ready for packing.

Tuna belly takes the process several steps further. First, the belly portion is separated from the rest of the fish. Because this area contains the highest fat concentration, it is handled independently from the beginning. The belly sections are cooked separately and cleaned with even greater attention to detail. 

From there, each individual strip of tuna is placed into the tin one piece at a time. Workers arrange the fish carefully so that the texture, appearance, and quality remain intact. Every decision is focused on creating the richest possible final tin.

How to Use Tuna Belly So It Actually Earns the Price

Because tuna belly is such a special cut, full of flavor and luxurious texture, simplicity usually wins. The dish should make tuna belly the star. 

Pair It with Tomatoes and Olive Oil

A simple plate of sliced tomatoes, raw onion, olive oil, and a splash of vinegar allows the richness of the tuna belly to shine. This is one of the easiest and most satisfying ways to enjoy ventresca.

Build an Exceptional Tuna Sandwich

Tuna belly also makes an incredible tuna salad sandwich. Because the fish is naturally richer, you can use a lighter touch with other ingredients and allow the texture of the tuna to remain the star.

Treat It Like a Finishing Ingredient

In some preparations, tuna belly functions almost like caviar. Rather than mixing it into a recipe, add it at the end. A few pieces placed over a finished dish instantly elevate the entire experience.

Keep It Simple Over Rice

If you are new to premium tinned fish, try serving tuna belly over warm rice with scallions and a small amount of mayonnaise. The combination is familiar and comforting, letting the fish remain the focus.

Tuna Belly FAQ

Is tuna belly the same as ventresca?

Yes. Ventresca is the Spanish name for tuna belly, the prized fatty section found on the underside of the fish.

Why is tuna belly more expensive?

Tuna belly comes from a limited section of the fish and requires significantly more labor to prepare and pack. The combination of a premium cut and extensive hand work contributes to the higher price.

What does tuna belly taste like?

Tuna belly is richer, softer, and more buttery than regular tuna. Its higher fat content creates a more luxurious texture and deeper flavor.

Is tuna belly better than regular tuna?

Not necessarily. It offers a different experience. People who enjoy richer textures and more indulgent seafood often prefer tuna belly, while others may prefer the lighter texture of standard tuna.

The Difference Is in the Details

At a glance, tuna belly and regular tuna may seem surprisingly similar. But behind every tin of ventresca lies a remarkable amount of human craftsmanship.