Presumably back before the days of the Mighty Muncher, Sunderland and Shacklebomber crews used to need less 'ready to eat' rations?
Some eggs and seeds outbound, then harvest and slaughter on the way home?
The hard-boiled egg. Ugh. Horrible things... One V-bomber driver always thought it was a merry jape to crack the shell on his co-pilots bone dome. Until one day the Nav Radar switched it for a raw egg.... The co-pilot was less than amused!
My nominations for 'worst things in S1 boxes' are:
3rd place - Serco sandwiches...
RAF in-flight ones were much better!
2nd place - Mr Kipling cream cakes with advanced penicillin cultures visibly evident....
But 1st place must go to:
Ta da!!
The Robirch pork pie. A small cylinder of case-hardened pie crust, containing a fossilized pig. Or rather, part of pig. Not sure which part, tail and snout, probably. If you shook an in-flight Robirch pork pie, you could hear the pig part rattling around inside like a dice in a cup...
Although to be fair, I did
once see a fresh one - but it was being devoured by a Wg Cdr at the time, so I guess RHIP?