The slideshow above contains images of three burgers each ordered medium-rare at Bukowski, an ambitious burger grill squeezed into a shipping container on the upper level of Boxpark in London’s Shoreditch.

 
The third burger was a replacement for the sent-back second, which, judged according to the burger doneness color strip below, was overcooked.

The name Bukowski slapped on its classic burger is perhaps an unfortunate one given the unpinkness of the three I ordered medium rare. The burger with the Hereford beef patty cooked in 50 shades of grey is called – you can’t make this up – “The Purist”.