"Jack-in-the-Box" McDonalds HUSH "cooking temperatures"

We’ve known since the 1993 Jack-in-the-Box outbreak of E. coli 0157:H7 that the big hamburger chains are concerned about cooking temperatures. Jack-in-the Box did not like Washington State’s rule for cooking ground beef to 158 degrees Fahrenheit because customers complained about the hamburgers being too tough to eat.

Sixteen years have passed, but the big hamburger