Eat The Kiwi Grass-Fed Wagyu Rib Eye Steak MBS6+ (Frozen, 200g)This beef Rib eye lip on comes with MBS of 6+. 100% Grass Fed Wagyu Beef. The Wagyu Producer Group is a band of pioneers. They did the unthinkable and took Wagyu cattle out of their pens and raised them on grass. It hasnt been easy, but being a pioneer never is. The result of all their hard work is the most extraordinarily tender, marbled grass fed beef, which beef experts all over the world are describing as the best grass fed beef in the world.