A bavette steak is a cut of beef from the bottom sirloin that has a deep, rich flavor and an open grain that becomes tender when cooked quickly over high heat. It's a versatile cut, excellent for grilling, broiling, or using in dishes like tacos, fajitas, or stir-fries. 
 
Where on the cow?
A bavette steak comes from the bottom sirloin area of the cow, a well-exercised muscle on the lower abdomen