I get lamb burger from my local butcher. He uses shoulder, and after grinding mixes in cubes of feta, rosemary, and salt & pepper. Amazing is all I can say. I love lamb, and this burger is the perfect expression of lamb without all the fuss and muss of cooking lamb on a weekday. I am not a burger traditionalist, and will put just about anything on a burger. My favorite beef combo is of course blue cheese and bacon, but also think that it would overpower the lamb.