My wife constantly grumbles when I accidentally splash water on the stove, because stains remain on ceramic coating after that. But now, I'm gonna to tell her:
Don't worry baby, it is just the Leidenfrost effect, there is protective, insulating layer, just watch...
Hahaha!
Yes, don't worry love, it's just physics magic!
@ruth-girl will write a post on how to easy clean the stains with natural ingredients so I can play with the cooker all the time :P