This sprig of mint was submerged in a pitcher of water in my refrigerator for a week and a half. During that time, it probably froze a couple times, because that’s the sort of thing my fridge does.
I fished it out and jammed it in the soil of one of my failed cilantro plants.
Two weeks later it has not yet died, and I suspect I actually see new growth.
As an experiment, I have cut a fresh sprig and jammed it in alongside.
I will let you know how this turns out. I may have brought mint back from the dead.