I have no idea. I've never done it! Clearly you cut the top & bottom off but what about the sides?
Dh has left me alone with it expecting rings when he gets back! This is from the man who still can't operate the washing machine at age 34!
PS I hate pineapple anyway. Only trying it as am now 4 days overdue & if this baby does not come out soon I WILL HAVE A TANTRUM.