Is Costco's A5 Japanese Wagyu The Real Deal? - Tasting Table
Briefly

Costco's A5 Japanese Wagyu steaks are authentic, sourced from Kagoshima, Japan, and are a competitive deal compared to most imported steaks in the U.S.
The marbling of Wagyu beef is distinct; it's intramuscular fat, giving it a unique texture and flavor, contributing to its high price and esteemed reputation.
Read at Tasting Table
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