Preheat the oven to 200C/400F.
Use a fork to prick the potatoes a few times, then coat them in a drizzle of oil and a good pinch of salt. Space out on the baking tray and bake for around 45 minutes, or until crispy and fork tender (timings will depend on size, so just be vigilant).
Take the potatoes out of the oven, and once cool enough to handle, slice them in half lengthways. Scoop out most of the potato and place it in a medium-sized mixing bowl, leaving a thin wall to keep the skins sturdy.
Mash the potato with cream cheese, butter, nutmeg, salt and pepper, then scoop back into the skins (make sure the mash is seasoned well). Bake again in the oven at the same temp for 25-30mins until the skins are nice and crispy, and the top is golden and crisp too.
Allow to cool for a few minutes, then top with salmon, crème fraîche, capers and chives, then tuck in and enjoy!