Scrub & peel potatoes if you like. Quarter them & place in a pot. Cover with water. Bring to a boil & remove from heat.
Heat 2 tb oil in a roasting pan. Add onions & fry quickly for a couple of minutes. Baste each potato well. Half fill the pan with water that cooked the potatoes. Sprinkle with salt & pepper. Cover & roast at 350F for 45 minutes.
Remove the lid & roast for a further 15 minutes or until the water has evaporated. Serve with your favourite roast.
Adapted by Mark Satterly from a traditional recipe