I try to avoid anything with milk in it, as I'm somewhat lactose intolerant. It will curdle in my stomach and make me feel ill for hours while exerting myself. I like oatmeal, especially with chopped dates added in. My frequent trail companions are not breakfast eaters so all I usually have time to make is a cup of tea or coffee while I munch some sort of fruit (chopped dates, dried blueberries, banana chips, etc) and/or granola bars.