Make sure bowl and beaters are completely clean; any trace of grease will prevent egg whites from reaching maximum volume. The whole recipe will fit on two large baking sheets. These kisses are small, but you can make larger ones if you prefer. Bake meringues at a low temperature to yield pretty colors without browning. You can make them up to several days ahead; store in a zip-top bag in freezer. Prep: 25 minutes, Bake: 1 1/2 hours.