Flap steak fits neatly into this category, and is, in fact, from the same part of the cow as these other cuts: The cow's flank, just farther back than what's sold as "flank steak." Flap steak and ...

Both cuts are from an area at the back of the cow between the short loin and the ... Bottom sirloin is chewier and leaner and can appear as tri-tip, flap steak or under the general label of ...