What Is Wagyu? A Guide to Japanese Wagyu Beef

Wagyu is Japanese beef from four recognised cattle breeds – Japanese Black, Japanese Brown, Japanese Shorthorn and Japanese Polled – as well as qualifying crosses between those breeds. It is especially known for fine marbling, tenderness and a rich eating experience.

But what makes Japanese Wagyu different from other beef? Is Wagyu the same as Kobe beef? What does A5 Wagyu actually mean, and how should you cook a Wagyu steak at home?

This guide explains the essentials of Wagyu beef, from the recognised breeds and grading system to marbling, flavour, Kobe beef, popular cuts such as Zabuton and rib eye, and practical ways to enjoy Japanese Wagyu in the UK.

Source: JETRO’s Japanese Wagyu guide identifies Japanese Black, Japanese Brown, Japanese Shorthorn and Japanese Polled as the four recognised Wagyu breeds and explains the Japanese grading system. View the JETRO Wagyu guide

■ What Is Wagyu?

Wagyu is a recognised category of Japanese cattle that includes four breeds: Japanese Black, Japanese Brown, Japanese Shorthorn and Japanese Polled, together with qualifying crosses between those breeds.

The word “Wagyu” is often used broadly outside Japan, but authentic Japanese Wagyu is tied to clearly defined breeds and production in Japan. JETRO notes that these recognised breeds are strictly controlled and that Japanese Wagyu exported from Japan can be identified through systems such as the Universal Wagyu Mark.

Source: Japan External Trade Organization (JETRO), Japanese Wagyu guide. View the official JETRO guide

This distinction matters because the word Wagyu may also appear on beef produced outside Japan. If you specifically want beef produced in Japan, look for clear information about Japanese origin rather than relying on the word “Wagyu” alone.

■ What Are the Four Wagyu Breeds?

Only four cattle breeds are recognised as the basis of Japanese Wagyu: Japanese Black, Japanese Brown, Japanese Shorthorn and Japanese Polled.

What Is Japanese Black Wagyu?

Japanese Black, or Kuroge Washu, is the dominant Wagyu breed in Japan. JETRO describes purebred Japanese Black as being bred for very fine intramuscular fat, which contributes to the marbling and tenderness strongly associated with Japanese Wagyu.

Source: JETRO, Japanese Wagyu information. Read JETRO’s guide to authentic Japanese Wagyu

■ What Makes Wagyu Beef Special?

Japanese Wagyu is especially valued for its fine marbling, tender texture and the way the fat is distributed through the meat.

Rather than appearing only as a thick outer layer, marbling refers to small flecks and fine lines of intramuscular fat within the muscle. The amount and distribution vary by animal, cut and grade.

What Is Wagyu Marbling?

Wagyu marbling is the visible intramuscular fat distributed through the lean meat. In Japanese beef grading, marbling is assessed using the Beef Marbling Standard, or BMS, which ranges from No. 1 to No. 12.

Marbling is not the only factor used to judge Japanese beef quality. Meat colour and brightness, firmness and texture, and the colour and quality of the fat are also considered.

Source: Japan Meat Information Service Center, explaining the nationwide Japanese beef grading standard. View the beef grading information

■ What Does Wagyu Taste Like?

Wagyu beef is generally known for a rich, savoury flavour, tender texture and a pronounced sense of richness from its fine marbling.

The exact experience depends on the breed, cut, grade and cooking method. A heavily marbled steak may feel very different from thin slices of Wagyu prepared for yakiniku, sukiyaki or shabu-shabu.

For this reason, there is no single flavour description that fits every piece of Wagyu. It is better to think of Wagyu as a category in which marbling, tenderness, cut and preparation all influence the final taste.

■ What Does A5 Wagyu Mean?

A5 Wagyu refers to Japanese beef graded “A” for yield and “5” for meat quality – the highest values in the two parts of the Japanese grading system.

The grades are combined, producing designations such as A5, A4, B5 or B3.

A5 is a grading classification, not the name of a Wagyu breed. It also does not mean that every product described as Wagyu is automatically A5. If a specific product does not state an A5 grade, it should not be assumed to have one.

Source: JETRO and the Japan Meat Information Service Center describe the A–C yield grades and 1–5 meat quality grades used for Japanese beef. View the JETRO guide or view the grading explanation.

■ Wagyu vs Kobe Beef: What’s the Difference?

Kobe beef is Wagyu, but not all Wagyu is Kobe beef.

Wagyu is the broader category of recognised Japanese cattle breeds. Kobe beef is a specific certified brand selected from Tajima cattle, a Japanese Black strain, and must meet detailed production and carcass-grading requirements set by the Kobe Beef Marketing & Distribution Promotion Association.

The official Kobe Beef criteria also include minimum marbling and quality requirements, yield grade conditions and carcass weight limits.

Source: Kobe Beef Marketing & Distribution Promotion Association. View the official Kobe Beef criteria and Kobe Beef FAQ.

■ Wagyu Steak: Why Is It Different?

A Wagyu steak can feel richer and more tender than a typical steak because Wagyu is especially associated with fine intramuscular marbling.

However, “Wagyu steak” is a broad description. The eating experience can change substantially depending on whether you choose rib eye, sirloin, chuck flap or another cut, as well as the grade and thickness of the meat.

With highly marbled beef, simple cooking is often enough. Strong marinades and heavy seasoning can make it harder to appreciate the flavour of the meat itself.

Wagyu also does not have to be served as a large steak. Thinly sliced Japanese Wagyu can work particularly well for yakiniku, sukiyaki and shabu-shabu, where smaller portions cook quickly.

■ Popular Wagyu Cuts: Zabuton and Rib Eye

Different Wagyu cuts offer different textures and cooking possibilities. Two useful cuts to know are Zabuton and rib eye.

What Is Zabuton Wagyu?

Zabuton is a highly prized chuck flap cut taken from the chuck roll near the shoulder. The Japanese name zabuton, meaning “cushion”, refers to the shape of the cut.

The Japanese Zabuton currently sold by Yutaka Shop Online comes from Kagoshima and is described as having fine marbling, a succulent texture and rich beef flavour. Because it is supplied as a chilled block, it can be sliced thinly for yakiniku, sukiyaki or shabu-shabu, or cut into steaks at home.

What Is Wagyu Rib Eye?

Rib eye is a well-known beef cut from the rib section and is widely chosen for steak because it combines tenderness with richness.

Yutaka Shop Online’s Fresh JUKU Japanese Wagyu Rib Eye Roll is supplied as a chilled block with a minimum size of 1.1kg, allowing you to cut portions to your preferred thickness at home.

■ Zabuton vs Rib Eye: Which Wagyu Cut Should You Choose?

Choose Zabuton if you want a versatile cut that can be sliced for Japanese hot-pot or yakiniku dishes as well as steaks; choose rib eye if you want a larger block suited to cutting your own steak portions.

■ How to Cook Wagyu at Home

The simplest way to cook Wagyu is to keep the seasoning restrained, use strong heat for browning and avoid cooking the meat longer than necessary for the result you want.

For Yutaka’s Japanese Wagyu Zabuton, the product cooking guidance suggests bringing the beef towards room temperature before cooking, seasoning lightly with salt and pepper, searing it over high heat and allowing it to rest before serving.

Keep the Seasoning Simple

Salt and pepper are enough to start. If you want a Japanese-style accompaniment, wasabi, grated daikon, ponzu or a Japanese steak sauce can complement the beef.

Cut According to the Dish

A block of Zabuton can be cut into steaks or thin slices. Thin slices are useful for quick-cooking dishes such as yakiniku, sukiyaki and shabu-shabu.

Follow the Product Instructions

Cooking times depend on the thickness and cut of the beef. Always follow the latest storage and preparation information supplied with the product and handle chilled meat appropriately.

■ What Is JUKU Wagyu?

JUKU Wagyu is a Japanese Wagyu concept centred on re-fattening mature cattle over an extended period, with the aim of developing an umami-rich eating quality while making further use of mature animals.

Yutaka’s current JUKU Wagyu Rib Eye product information describes the cattle as being re-fed over a long period in a stress-reduced environment, connecting the approach with both meat quality and livestock sustainability.

Because JUKU is a specific production concept rather than the definition of Wagyu itself, it is best understood as one particular approach within the much broader world of Japanese Wagyu.

■ Where to Buy Japanese Wagyu in the UK

Japanese Wagyu is available in the UK through specialist Japanese food retailers and selected meat suppliers, but origin, cut, grade and product format can vary considerably.

When choosing Wagyu, look beyond the word “Wagyu” itself. Check whether the beef is from Japan, which cut you are buying, whether a grade is stated, whether it is chilled or frozen, and whether it is supplied as a steak, thin slices or a block.

Yutaka Shop Online currently offers two fresh Japanese Wagyu block cuts:

Fresh Japanese Chuck Flap (Zabuton) Premium Cut 700g+

Kagoshima Japanese beef from the chuck roll near the shoulder, known in Japan as Zabuton.

It is supplied as a chilled block of at least 700g and can be sliced for yakiniku, sukiyaki or shabu-shabu, or cut into steaks and seared.

Good choice for: anyone who wants one Wagyu cut that can work across several Japanese cooking styles.

Shop Japanese Wagyu Zabuton

Fresh JUKU Japanese Wagyu Rib Eye Roll 1.1kg+

A chilled Japanese Wagyu rib eye roll supplied as a block with a minimum size of 1.1kg.

The block format lets you portion the beef at home and choose the thickness that suits your meal.

Good choice for: anyone looking for a substantial Japanese Wagyu rib eye block to portion themselves.

Shop Japanese Wagyu Rib Eye

Availability, price, weight and product specifications can change, so check the individual product page and packaging for the latest information before ordering or cooking.

■ Frequently Asked Questions About Wagyu

■ Discover Japanese Wagyu Beyond the Name

Wagyu is more than a synonym for expensive steak.

Understanding the recognised breeds, marbling, Japanese grading, the difference between Wagyu and Kobe beef, and the characteristics of different cuts makes it much easier to choose and enjoy Japanese Wagyu with confidence.

If you are buying Wagyu for the first time, start by deciding how you want to cook it. A versatile Zabuton block can be sliced for several Japanese dishes, while a larger rib eye roll gives you flexibility to portion your own steak-style cuts.

■ Sources

• Japan External Trade Organization (JETRO) – Japanese Wagyu Guide

  Information on the four recognised Japanese Wagyu breeds, Wagyu identification and the Japanese A–C / 1–5 grading structure.

  View the JETRO guide
• JETRO – The Ultimate Guide to Authentic Japanese Wagyu

  Background information on Japanese Black Wagyu, fine intramuscular marbling and authentic Japanese Wagyu.

  View the JETRO article
• Japan Meat Information Service Center – Beef Grading

  Explanation of yield grades, meat quality grades and the Beef Marbling Standard used in Japanese beef grading.

  View the grading information
• Kobe Beef Marketing & Distribution Promotion Association – Kobe Beef Criteria

  Official requirements for certified Kobe beef, including Tajima cattle, grading, marbling, yield and carcass criteria.

  View the official Kobe Beef criteria
• Kobe Beef Marketing & Distribution Promotion Association – FAQ

  Official explanation of the relationship between Wagyu, Japanese Black, Tajima cattle and Kobe beef.

  View the Kobe Beef FAQ