Totally agree with all of the other posters, lunch is really just a longer snack time. A time to take off your pack (and boots and socks) and relax for a bit before you head on your way. Jerky and cheeses goes a long way. I enjoy granola bars and other lighter food options. I would not make a dehydrated meal for lunch, it takes quite a bit of time (once you dig it out of your pack and wait for the food to rehydrate). Save your dehydrated meals as a treat at the end of the day and something to look forward to.