Aircrew rations.
There's a very good reason we get aircrew rations.
That's because we don't get to go and sit in the mess for an hour and enjoy a nice lunch whilst reading the paper. When in the middle of a five hour planning/flying/debriefing cycle there isn't always time to get a proper lunch.
When we do have time we usually go for a quick bite in the feeder which we do pay for.
And finally, if you call toast and biscuits a free lunch then you definitely need to get out more!
BV