This grilled steak sandwich is the best you'll ever make

It wasn't long ago that our options for cuts of steak were limited. If you wanted a rib-eye or New York strip, no problem. If you were looking for a skirt steak or a flat iron, that might have taken a little more effort. And if you wanted a tri-tip? You were likely met with a blank stare and a shrug from whomever was helping you at the meat counter. Lucky for us, that's all changed in the past several years. Sort of. While you can't swing a leg of...