OK, folks, educate me. Is it just me, or does it seem like this thin style of burger is just not suitable to be cooked reliably at anything but medium doneness, at best? (Although that photo is pretty promising.) Hear me out here. I like my beef on the rare side of medium rare, generally, but when it comes to thin style patties (under 1/4 pound at least, preferably 1/6 lb), I want that crispy, well-caramelized exterior which is a signature of the style. When I make my own, it's almost impossible to get anything better than medium consistently, unless you are starting from a frozen patty. Am I nuts for thinking this way? I mean, yeah, you can cook it medium rare, just like anything else, but then it's difficult to get that almost-cripsy, brown exterior. The expectation of a medium rare patty at that size seems to be a bit quixotic, to me, at least if you want to preserve the other elements of the style that just make it tasty. My personal rule is 1/2 and up burgers should be called for doneness, and medium rare is ideal. The 1/4-1/3 lb range starts getting hit-or-miss. Anything under 1/4 lb, and I don't give a damn about the meat being well done, as it's almost inevitable if you want the well-caramelized exterior.