Man of Honour
I'm not sure I posted a perfect recipe but making fairly thin burgers with a mix of 50/50 chuck and brisket (or rib, even better) with a 25+ % fat ratio is pretty awesome. As I said, make them thin and only season them with plenty of salt all around the outside just before you chuck them on a grate that is immediately on top of a chimney starter full of fully lit coals. The burger will brown perfectly and still be medium rare inside. It'll also complete this process in very little time at all.
edit: If you're making lamb I totally recommend lamb barbacoa
http://www.seriouseats.com/recipes/2013/10/smoked-lamb-barbacoa-recipe.html
edit: If you're making lamb I totally recommend lamb barbacoa
http://www.seriouseats.com/recipes/2013/10/smoked-lamb-barbacoa-recipe.html