Instructions

  1. Preheat the oven to 200 degrees C.Prick the potatoes all over with a fork and place on a baking tray and roast for 1 hour until cooked.
  2. When they are cool enough to handle,tear the potatoes into 3 cm chunks.Return the chunks to the baking tray and scatter with the onion,herbs chilli flakes and garlic.
  3. Drizzle with the oil and toss well to combine.Dot with the pieces of butter and season with plenty of sea salt and ground black pepper.
  4. Roast on the top shelf for 15-20 mins,turning regularly,until crisp and golden.