McDonald’s introduced a brand new Wagyu beef burger last week, but you’ll need to go to Australia to try it out while the limited offer lasts. The 811-calorie burger, which comes with crispy bacon, carmelized onions, tomatoes, lettuce, cheese and a tangy “specially created” sauce, sells for $8 and some change in U.S. dollars. Wagyu - a Japanese cattle breed that’s known for its taste and tenderness - is gaining strength and popularity down under as it becomes more apparent to Australian beef producers that there is a real need and demand for high quality carcasses that derive from the marbling prominent in the Japanese genetics, notes the Australian Wagyu Association. And with McDonald’s desire to source locally, the fast-food chain is committed to 100 percent Australian-bred Wagyu beef. Thus far, food reviews on social media have been mixed as some customers vent frustrations over the cost and taste.