A Pineapple Corer. Not only does a corer make cutting this tropical fruit very simple, it also makes the fruit look way nicer than most of us could do on our own! After using this tool, youâre left with the most beautiful yellow rings, which look like something a professional chef created.This is a 3 in one tool, coring slicing and peeling the pineapple in one swift move. Designed to minimize waste. Re-use the leftover pineapple shell as a bowl, good for dipping salsa and other sauces. Easy Grab the handle and easily twist down, keeping the safety blades away from the hand, allowing the slicer to do all the work for you.