200gthinly sliced leekseparate the green from the white part
salt to taste
black pepper to taste
Peel and dice the potatoes.
Wash and slice the leeks, keeping the 'white' part separated from the 'green' part, as they will be needed in two different stages.
Put in a large pan of salted boiling water the peeled and cubed white potatoes and the sliced green part of the leeks and boil until cooked.
Once ready and drained, in a frying pan add the butter and lightly fry the white part of the leek kept aside. Once the leek becomes tender and cooked (i.e.: like onion for a curry or sauce), add the boiled potatoes and leeks and mix well.
With a hand masher, mash the potatoes and leeks in the pan; you can mash these as much as you like; some prefer it chunky, while some do not like the ‘knots’. Once mashed add the salt and black pepper to taste, then mix and serve!