When it comes to rich, unctuous foods, a prime cut of beef is as good as it gets; and nothing tops wagyu in texture, richness, or price. Simply translated, wagyu means “Japanese cow,” but considering that there are numerous breeds of Japanese cattle, it stands to reason that not every wagyu steak is created equal. Furthermore, wagyu cattle are raised in more than one country—Australia and the United States are two of the largest producers outside of Japan—which means buying a wagyu steak isn’t as easy as it ma…