Using Lugol's iodine tincture on steak can sterilize the surface, similar to how iodine is used to sterilize water for backpacking.

“what I would do when I was really doing the wrong thing heavily is I would make it iodine tincture so I'd put in a few drops of lugol's iodine in water and I drop the steak into the water and slosh it around for a little while that is how you sterilize water that might have a little bit of poop in it and as a backpacker you know very well how to use iodine to sterilize water you can miss Terrill eyes your meat - as long as you're only worried about the surface”