This is something that my daughter learned in an after school nutrition club:
Break foods into 3 categories
GO foods are good healthy choices that can be eaten any time. Fruits, veggies, lean meats, etc. "anytime foods"
Slow foods you can have in moderation. Pizza, mac and cheese, hot hogs. Also called "sometimes foods"
WHOA foods are occasional treats. Chips, cookies, etc. "no foods"
We have a lot of fun talking about different foods and making charts!!