wagyu beef

Wagyū (和牛?) refers to several breeds of cattle genetically predisposed to intense marbling and to producing a high percentage of oleaginous unsaturated fat. The meat from wagyū cattle is known worldwide for its marbling characteristics, increased eating quality through a naturally enhanced flavor, tenderness and juiciness, and thus a high market value. In several areas of Japan, beef is shipped with area names. Some examples are Kobe, Mishima, Ōmi beef and Sanda beef. Highly prized for their rich flavor, these cattle produce arguably the finest beef in the world. These different breeds produce beef that range from expensive (by any measure) to extremely expensive (about $500 USD per 150 grams of filet steak sold retail in Japan).
The wagyū cattle's genetic predisposition yields a beef that contains a higher percentage of omega-3 and omega-6 fatty acids[1] than typical beef. The increased marbling also improves the ratio of monounsaturated fats to saturated fats.

very good.....fantastic

Tuna tartare:
4 oz yellowfin tuna diced
1/2 avocado diced
1tbs olive oil
1tsp truffle oil
1tsp sweet thai chili sauce
1/2 lemon juice.
mix together and serve over toast fois gras.