When making a latte, I like to stick my milk-filled carafe in the freezer for a couple of minutes to get the temp down. Well, today, I forgot that I had done that and went about my business for about 45 minutes.
The milk was, as wouldn't surprise anyone, half-frozen. I tried to break it up with a spoon to not much avail. So, I figured, what the hell. I jammed my steam wand into the milky little arctic ocean and turned it on.
The ice faded very quickly, the whirlpool whipped up, and about twenty seconds later, I had a perfectly-steamed carafe of milk. It worked! Delicious.
So, yes. If you ever accidentally freeze your milk, don't worry. Just jam that wand into the frozen mess and turn that mofo on. There's no need to cry over frozen milk.