heat the oven to 200c/fan 180c/gas 6. Toss the new potatoes in olive oil and sprinkle with salt flakes. Roast for 40 minutes or until they feel soft when pressed.
Cool briefly, then cut a cross in the top of each and squeeze the sides so they open up. Just before serving, spoon a dollop of crème fraîche into each and top with roe or snipped chives.