In Chocolate Island 5, play the level as normal. Past the midpoint in the level, you'll begin to see a bunch of Spinies trapped in unmoving blocks (which are removed by a silver P Switch). Get the nearby blue and silver P Switches and try to drop one on top of the other so that they completely overlap each other; when done properly, attempting to grab one will grab both. Nearby, also, are some yellow flip panels, with a blank spot in the center. Get in the center and run right as much as you can. Let go of the switches and, suddenly, ? Blocks will begin appearing, spewing a multitude of Yoshi Eggs. Once a Yoshi hatches, these eggs will spew 1-Ups instead.