Potato salad is a dish comprised of boiled potatoes and various other ingredients.
On a flight between Berlin and London, several H.A.R.M. Paratroopers had boarded the Airplane being used by Cate Archer and Dr. Schenker. As two of the paratroopers were searching, they came across the food pantry on the airplane and started eating. One commented that the potato salad wasn't bad. He threw up when his partner told him that it was actually Cottage Cheese.
Potato salad on Wikipedia