It is perhaps unfair of me to fault Mother Flipper for slightly overcooking their burgers, missing by less than a minute the liftoff from the flat-top griddle to juicy medium rare. This has happened twice, first in February at its original home ground at Brockley Market in Southeast London and again yesterday at its Eat Street debut behind Kings Cross Station.

In the US you wouldn’t expect short order cooks at diners, truck stops and burger stands to make the distinction between pale and deep pink, especially burgers below the 5-ounce and 4-dollar barriers. So why hold their UK counterparts to a higher standard?

[slider_pro id=”9″]

I could answer my own question by noting that Mother Flipper asks £5 for its cheeseburger, roughly 8 dollars. But prices for satisfactory beef and authentic plastic cheese are higher here. Good cheap burgers (with this notable exception) don’t really exist in London. Comparing US and UK burgers according to price is problematic.

To learn the reason why I make such a big deal about seven small degrees, estimating internal meat temperatures from 55-degree (Celsius) for medium-rare to 62-degrees for medium, you have to inspect the pavement.

I tried two Mother Flipper cheeseburgers yesterday. The first, cooked a notch above medium though I asked for medium-rare, was nicely constructed with beautiful ketchup/mustard art on the bun, very tasty and, importantly, a safe object to hold in my hands. No leaks. I didn’t embarrass myself. But the second, cooked as ordered, was a thing of danger and looming dry cleaning bills, bleeding beefy juices from every pore of its patty.  Unable to wait to find a place to sit I devoured it walking away from the stall, leaving a trail of grease and mourning every lost drip.