By Elisabeth Luard
Potatoes take hours to cook in the embers of a campfire, so bake them in the oven first and keep them warm by the fire while you roast tomatoes on sticks.
Preheat the oven to 190°C/375°F/Gas mark 33. Soak some wooden skewers in water for at least 30 minutes.
Scrub the potatoes, prick them with a fork in a couple of places, and bake them in the o