AS I am going to be spending a lot more time in coach this coming year, I was wondering what people brought with them for meals, especially on the long hall transcontinental routes. I know you can buy on board, but often they run out, their selections leave a lot to be desired, and it is expensive. However, one needs to consider what you can bring through security (no liquids or gels, and I am assuming things like Mayo and Sauces count as gels), as well as how you will fit it all into your carry on assuming one is traveling without checking luggage. I don't have any ideas to add myself yet, but figured maybe I could start a thread.

So, we are looking for ideas of food one can bring with you onto the plane. Has to be able to get through security, and need to have some idea how you are going to manage this plus your bags. Let's hear them!