i don't have kids, but i think you have the right idea. my parents used to make me and my sister try it first before we could say we didn't like it, but fortunately we weren't quite that picky - i mean, there was always something we'd eat, and if we didn't like part of something, we'd just pick it out. (like your kids and the avocado. :D ) altho my sister did claim to be allergic to cranberries when in fact she just didn't like them....