Wagyu, known for the best quality beef in the world, literally means Japanese beef or cattle while not every cow born in Japan is eligible to use the word in the product name. In 1976, the sperm and embryos of Japanese beef taken for research purposes in Colorado, USA, leaked to other countries, and mixed cows crossed with other breeds were distributed as Japanese beef in Australia and the United States. This made the Japanese government officially certify Wagyu to distinguish it from the rest of the “Japanese-ish” beef in the market to guarantee its quality and protect the presence of authentic Japanese Wagyu beef.
BMS stands for Beef Marbling Standard, which is a standard for evaluating “fat crossing”. The rank of beef is determined by the quality and quantity of the marbling in the lean meat. There are 1 to 12 ranks, with 12 being the best. BMS 1 qualifies as grade 1 beef, BMS 2 as grade 2, BMS 3-4 as grade 3, BMS 5-7 as grade 4, and BMS 8 and above as grade 5 which is known as supreme quality A5 Wagyu in the market.