On a Nimrod transit to the Med....
....it was possible with a bit forward planning, some groundcrew help at the galley table and some basic cooking skills to feed 26 people with sausage, bacon, fried egg, grilled tomato c/w orange juice, bread and butter and tea or coffee, inside an hour.
Or on a return transit from USA lobster/prawn starter, steak and garbage bag salad.
The latter was as described - iceberg lettuce (bang the stalk on the table and you can pull out the whole core)sliced. Sliced tomatoes and peppers and cucumber all put into one of the big black rubbish sacks. Tip in one of those Kraft triangular bottles of the dressing of choice, close the neck of the bag and give it all a good shake.
Steaks at one time were done in the "infrared grill" but as it vented into the underfloor bay a number of underfloor warnings and susequent panics led to doing them in the oven- seven at a time.
Easy once you've done it a few times.
The Ancient Mariner