Hmmm, shades of North Sea lunches: the best (worst?) was a full plate of rice & curry, straight out of the window of the 212 once safely airborne
Irish rig support smoked salmon sarnies. More salmon than bread
Cheese and bikkies? Soft crackers would be too crumbly (crumbs in the flight suit, yuk), hard biscuits a tad difficult with only one hand. Cheddar leaves a residue on the survival knife, Brie doesn't get soft enough at this time of the year ( -5C today in the snow.....).
Obviously Cheshire and a suitably crusty piece of bread for the refined aviator