For really good roast potatoes, you need *old* (floury) potatoes, not new (waxy) ones. Peel them if you really have to, parboil (drop them into boiling water for about 10 minutes, depending on size, just to slightly cook them) and then drain and pop them back in the pot. Meanwhile, heat your oven (225 deg C) and place a large roasting tray half filled with oil in the oven (I like to use olive oil but you can use any oil). I always place the roasting tray on top of another baking tray to make it easier to handle. Some people like to scour the outside of each potato with a fork, others just shake the pot with the drained potatoes to loosen up the edges of each potato. Drop each potato into the hot oil, spoon hot oil all over each one and place back in the hot oven. Check after about 10 minutes - turn the potatoes over and spoon more hot oil over them, then return to the oven. Keep an eye on them to ensure they don't burn, turning as needed. When they are golden brown, remove from the oil and place on kitchen paper to remove the excess oil. Serve up and devour...