Another angle too look at this issue. A car needs Gas (does not matter much which), a biker needs food (it should not matter so much which). Oatmeal is Carbs plus milk and sugar. Cold or warm does not matter as fuel for your engine. Fruit is more sugar which your body also needs.
I eat most of the time in restaurants. I have learned to ignore taste and just carb up.
Do not get me wrong, I love good food. I get that at home. On a bike tour or on a business trip, forget that. Eating healthy is all that matters and that is tough enough to do.