RPM Steak Kobe Beef Striploin Kobe Beef Striploin at RPM Steak is documented with Kobe Beef, the Usunaga Farm program, and menu identifies it as Yamazaki whiskey-fed Wagyu. CutStriploinOriginJapanType / gradeKobe BeefProducerUsunaga FarmExperienceMenu identifies it as Yamazaki whiskey-fed Wagyu View source