Antoine Augustin Parmentier was an eighteenth-century food writer and economist, said to have converted the French to potatoes. Before this time, potatoes were widely held to be devil’s food!
Peel the potatoes, cut them into quarters lengthways and then slice thinly Keep in cold water until ready to use. Trim the roots off the leeks, then cut each leek in half lengthways and slice thinly.
In a large pot, melt the butter, add the leeks and cook over low heat for about 8 minutes, or until the leeks are soft and all the liquid has evaporated. Add the s