Grated orange zest and poppy seeds add much flavor (and the seeds a bit of crunch) to these pancakes, which also include ricotta cheese in the batter for the ultimate in taste and texture. Plus, the egg whites are beaten until stiff and then folded into the yolk mixture, resulting in pancakes that are light and fluffy. All you need is a slick of oil in the pan to keep the pancakes from sticking, and for foolproof flipping.