Ultimate roast potatoes

Place a roasting tin in a preheated oven to 180°C/350°F/ gas 6. Peel each potato and then drop them into a large pan, pouring enough water over to cover them. Add salt and allow the water to boil, as soon as the pot is boiling, lower the heat and put the timer on, simmer for 2 minutes. In the meantime, put the oil or fat into the roasting tin and heat in the oven so it's very hot.  

Drain the potatoes and shake them vigorously in the colander. This makes the outsides fluffy. Sprinkle with the flour and mixed herbs. Shake again until they are evenly covered. Gently spoon the potatoes into the hot fat and then turn and roll them until they are fully covered. Spread in a single layer. Cook for 15 minutes and then turn them. Repeat every 15 minutes for 45 minutes or until golden crisp. Sprinkle with a little salt and black pepper.