Our daughter & her husband are in the business. They are continually educating potential customers regarding Wagyu and how it can vary. Instead of resurrecting an old 2021 thread where I posted this as a comment. Here is some Wagyu information that is good to know before reaching for the wallet.
Interesting fact about the labeling of Amer. Wagyu. In many places they sell/prepare Wagyu that is not close to being from purebred or fullblood cattle. I do not believe there are any entities regulating the labeling of wagyu. So a 50/50 cross breed with angus stock (F1) can be sold as wagyu the same as a fullblood F5. American wagyu cattle can be anywhere from 50% to 100% based upon lineage. Don't get me wrong the 50% variety does taste very good but compared to purebreds (F4) or Fullbloods (F5) you can definitely tell the difference. Additionally, there is a difference in flavor depending on how the cattle were fed during the finishing stage before going to slaughter. If you are in the market to purchase, do some research regarding the ranch supplier, what their stock actually is and how they are fed out in the later stages.
Fullblood American Wagyu, can trace it's lineage back to Japan. The F rating system here in the US is based upon the % of wagyu in the animal. The Japanese A grading system for marbling percentage is based upon the 13th ribeye which is where they grade the carcass. More reading here (page is dated but still accurate): https://blogs.lonemountainwagyu.com/wagyu-classifications-in-the-united-states
Interesting fact about the labeling of Amer. Wagyu. In many places they sell/prepare Wagyu that is not close to being from purebred or fullblood cattle. I do not believe there are any entities regulating the labeling of wagyu. So a 50/50 cross breed with angus stock (F1) can be sold as wagyu the same as a fullblood F5. American wagyu cattle can be anywhere from 50% to 100% based upon lineage. Don't get me wrong the 50% variety does taste very good but compared to purebreds (F4) or Fullbloods (F5) you can definitely tell the difference. Additionally, there is a difference in flavor depending on how the cattle were fed during the finishing stage before going to slaughter. If you are in the market to purchase, do some research regarding the ranch supplier, what their stock actually is and how they are fed out in the later stages.
Fullblood American Wagyu, can trace it's lineage back to Japan. The F rating system here in the US is based upon the % of wagyu in the animal. The Japanese A grading system for marbling percentage is based upon the 13th ribeye which is where they grade the carcass. More reading here (page is dated but still accurate): https://blogs.lonemountainwagyu.com/wagyu-classifications-in-the-united-states