Wagyu Tri-tip steak is part of the bottom sirloin subprimal cut. It is also known as Santa Maria steak since this California town made the tri-tip roast famous at its annual barbecue festival. The tri-tip has excellent marbling qualities and is very tender as long as you don't overcook it. It is built for grilling, but it can also be cooked in a hot skillet on the stovetop.