I'm a big proponent of this method. I do the same thing several times each winter in my car using an empty parking lot.

Practice feeling comfortable sliding and recovering so you don't have a bad reflex and overcorrect. Absolutely saved my ass one time a few years ago driving home from work.

I was on a 55 and the roads were dry and clear. I came around a slight curve that runs next to some woods and hit black ice immediately. I lightly tapped the gas and tokyo-drifted back to the center of the lane. Felt just like what I had practiced and I felt calm while doing it. Had I panicked and slammed on the brakes, I would have gone sideways into the woods at 55.