- USING a serrated knife, slice off the crown and the base of the pineapple. This will help keep the pineapple stable while you trim the sides. 2. HOLD your pineapple straight up. With the blade of your knife pointed downward, trim off the skin of the pineapple, working your way from the top to the bottom. If you leave a few tiny brown bits on the fruit, that’s okay (unless you’re serving Martha Stewart).3. SEE that pale yellow circle in the middle of your pineapple? That’s the core. Still holding your pineapple straight up, cut thick, vertical slices as close to the core as possible. Continue until you’ve sliced the entire pineapple; discard the core. Cut the thick vertical slices into smaller sized chunks, and you’re done!
