On Oct 6, 9:51 am, "Ed Huntress" wrote:

I've never bought frozen burgers. I hate overcooked burgers but I overcook
them a bit these days. I'm just gunshy about e. coli and so forth. I have
good meat thermometers but I can't imagine how I'd get an accurate
temperature measurement even on a burger that cooked up 5/8" thick, like
mine.

I grind my own, seriously reducing the chance of having contaminated
ground meat.

I can't find any statistics, but all the news listings I see for E
coli seem to be linked to pre-ground.