Post by Elyse May (aka Veggie Teen) from my book, Veggie Teens: A Cookbook and Guide for Vegetarian Teenagers.
In addition to hundreds of recipes, there are 21 "Veggie Teens Culinary How To" instructions in Veggie Teens, each with three-step photos. Here is an easy way to dice an onion.
Make parallel slices in the onion without cutting all the way through (the closer the slices, the smaller the dice will be). Turn the onion ¼ turn and repeat so you end up with a criss-cross pattern in the onion.