Sicilian Potato Salad with Wild Oregano, Capers, and Olives

This piquant potato salad is enriched with salted capers and olives and perfumed with Sicilian oregano. It’s bright and briny and as I was assembling it recently, I imagined myself going through the same motions in the kitchen of a small house perched on a stony hill on the island of Pantelleria, the perfume of oregano carrying across the breeze (in my …