Mashed potatoes

• 1 kg floury potatoes
• 150 g salted butter
• 250 ml<

Put the potatoes, in their skins, in a big pan of cold salted water and bring to the boil. Reduce the heat and simmer for about 20 minutes or until the potatoes are tender but not mushy. Drain, then return to the pan, off the heat. Cover the pan with a folded tea towel - or an old newspaper, which is what my mother always used - and leave for 5-10 minutes so the potatoes can steam off the exces