Originally Posted by
NuncEstBibendum
Interesting, however that doesn't seem to quite fit with the new trend in the UK for offering "Gourmet" burgers that are cooked to medium.
Also it doesn't explain steak tartare.

The answer was to a remark about the the inability to get burgers not cooked right through in Canada. Quite possibly these type of government guidelines don't apply in the U.K.. Anyway this is way OT and more expert opinion than mine can be found out just by googling the subject.