Tosa Rouge Beef
Kochi
English name: Tosa Rouge Beef — no official English name found, so romanised by this site.
Requirements for Tosa Rouge Beef: breed — Japanese Brown; age — at least 28 months of age guaranteed (29 months or older recommended); grade — carcasses graded A3 or A2 under the national carcass standard, re-assessed on the TRB scale (13 first-stage and 11 second-stage items) and judged R5 (better) or R4 (good). Also: only carcasses stamped with the TRB certification mark and the brand mark are sold under the name. Not specified: where raised.
Definition — what qualifies
| Breed | Japanese Brown Must be Tosa Wagyu “Tosa Akaushi” Sources: [E014] |
|---|---|
| Where it must be raised |
Not set (no such requirement in the source) |
| Age / fattening period | At least 28 months of age guaranteed (29 months or older recommended) |
| Grading | Carcasses graded A3 or A2 under the national carcass standard, re-assessed on the TRB scale (13 first-stage and 11 second-stage items) and judged R5 (better) or R4 (good) |
| Other conditions |
Only carcasses stamped with the TRB certification mark and the brand mark are sold under the name [B035] |
Grades follow the Japan Meat Grading Association: yield grade (A–C), meat quality grade (1–5), and marbling as BMS No. (1–12). How Japanese beef is graded →
Certification began in April 2020. Unusually, the grading condition has an upper limit: only A3 and A2 carcasses qualify, not grades 4 or 5. The thresholds for the 13 and 11 TRB items (rib-eye area, subcutaneous fat, rib thickness, yield estimate, rib-eye shape, intermuscular fat, fine marbling and so on) are not published.
Compared with other brands
This guide lists 3 beef brands that require Japanese Brown cattle. 17 beef brands set a minimum age, ranging from 18 to 33 months. 28 months ranks 3rd from the longest (4 others also use 28).
This guide lists 4 brands from Kochi (also Tosa Akaushi, Tosa Jiro and Tosa Wagyu). By prefecture →
Compare this brand side by side with others → ・ Find brands by their rules →
Counts cover only the brands in this guide.
Guides
- Same body, different brands: how 31 Japanese meat brands from 13 bodies differ
- Does Kobe beef have to be A5? We counted the grading rules of 100 Japanese beef brands
- Heifers, steers, or anything? The sex rules of 100 Japanese beef brands
- Where must Japanese brand beef be raised? We counted the region rules of 100 brands
- How old is Japanese brand beef? We counted the age rules of 100 brands
- What counts as wagyu? Four breeds, born and raised in Japan — and how 100 beef brands break down
Managed by
- Managed by
- Tosa Wagyu Brand Promotion Council
- Official site
- https://www.pref.kochi.lg.jp/doc/trb01/
Other brands from Kochi
- Tosa AkaushiBeef brands
- Tosa JiroJidori and branded chicken
- Tosa WagyuBeef brands
About the names
Brand names are proper nouns. English names follow the brand association's official English page first, then the English name in the GI register, and otherwise romanised Japanese plus "Beef", "Wagyu" or "Pork". We never call a non-Wagyu brand Wagyu.
Sources
Sources are in Japanese
- [B035] 土佐あかうしらしい肉（枝肉）の規格制度「TRB規格」について — Kochi Prefecture ・ Primary source ・ Accessed 2026-09-28
- [E014] 土佐あかうしの新たなブランド「Tosa Rouge Beef」について — Kochi Prefecture ・ Primary source ・ Accessed 2026-09-28