Ive been taking protein shakes recently, add ice to milk before I walk out the door, or use water but the milk tastes better. It's a great energy and hunger booster if your strapped for time during duty, which we always seem to be. I tried the frozen food thing but it never worked as I could never pinpoint a rough time we could get a chance to eat. 4 sectors days, short flights, slot congested airports, other aircraft waiting for you to get off the bay! Who has time to eat!