Once flew as SLF on Albert to Hurlburt Field, FL. We had the issue Meal, Packed, ex Lyneham as described by Beags and the good Flt Lt. The Catering Section had been reading up carefully in the British Rail manual of food provision, and reckoned they could go several steps further towards total inedibilty.
I'm fairly sure that 98% of the contents ended up in the black bin bags so carefully provided by the Loadie just before landing at Gander.
The next morning leaving Gander, the food Fairies left the results of their overnight labours. Out of the box came club sandwiches with ham, salad, pickles and mayo, with decent chips/crisps, a quality drink, a pack of real cookies and a real peice of fruit.
Just what was needed after a night on the p!ss.