I realize this isn't a physics forum, but if anyone has an idea what's going on here, I'd like to hear it.
Was reading a blog post about homemade yogurt & came across this in the comment thread:
Before you even turn on the stovetop,put an ice cube in the pot and move the pot around so the ice covers every inch of the bottom as it melts. When the ice is entirely melted, leave the cold water in the pot and just add the ingredients to it. As long as you don’t touch a metal spoon to the bottom of the pot as you stir throughout the recipe, the milk won’t scorch the bottom of the pot.
I was skeptical, to put it mildly. How is the bottom of the pot supposed to remember that it was cold before it got hot? What sort of force-field does this little bit of water on the bottom of the exert after you dump a half-gallon of milk on top of it?
I make yogurt all the time, always get a pretty significant layer of scorched milk on the bottom of the pan (a heavy SS/aluminum sandwich-bottomed Vollrath) which is a PITA to scrub off; I thought what the heck, I'll give it a try.
Does anyone know why?
I suppose in the name of science I should touch a metal utensil to the bottom of the pan sometime & see if that breaks the magic spell.