With the Vacu Vin Pineapple Cutter you can easily cut a pineapple into rings and pieces. Cut off the top of the pineapple and twist the pineapple cutter into the pineapple. Pull the pineapple cutter out of the pineapple when no further cutting is possible. Now is when you can enjoy the pineapple rings. To make pieces out of the pineapple rings just put the yellow piece on it and then you can push the piece down. This way you have easily cut pineapple.