It's hard to believe, but until the 18th century, potatoes were thought to be unfit for human consumption and were fed to animals. The French agronomist Antoine-Augustin Parmentier made them popular and this tasty little dish is named after him. So when you're fed up of chips, fries, mash or roasties, or even if you're not, try this - it's lovely.
Use floury potatoes such as Maris Piper, Russets, Yukon Gold.