I just pulled a new cheddar out of the press after 12 hours, and I've seen a few areas of discoloration on both sides. They don't appears to be just on the surface, which has me worried.
(https://i.imgur.com/wqs6GpY.jpg)
Any ideas?
what was it pressed in? wrapped in? set on what?
Looks like blue, PR, but that shouldn't turn up that quick. You did sterilized the molding all of the equipment, right?