Just like a cow brander, I have an image of two hamburger patties on a flaming grill and I want to put our logo on the patties, to look as though the logo is burnt on/embedded into the patty.
Interesting request I know.
I just can't get it to look as realistic as I know I can.
Blending Modes (aka Transfer Modes) are your answer. If the term isn't familiar, look it up in the help files. Usually, you just try the different modes to see what looks best, there's no right answer for every case.