Are we talking about eating the next day after a fast, or breakfast in general?
If I actually fasted the day before, I will probably grab my morning soda and let it settle for awhile. I've found trying to eat initially after a day of fasting makes me feel crappy. I know, soda isn't good for me, but that's what I do. After I feel settled, I may have a piece of fruit, a carrot, or bit of yogurt. Something easy to digest, and that is enough to signify 'the fast is broken' to me.
If its breakfast...don't really eat it. I may take a bite off of something or another I've made for the kids, but I don't really like to eat in the morning.