All you need is a bag of salad spuds, some salt and a few glugs of groundnut oil.

Scrub the spuds but don't peel. Cut into chip-sized pieces. Par-boil in salted water for eight minutes.

Meanwhile, turn your oven up to as high as it will go and grab a roasting tin.

Drain the spuds and leave for a couple of minutes to dry out. Put them back in the pan and shake like mad until all the edges are frayed. Put into the baking tray and coat generously with the oil. Put into the hot oven for about twenty minutes. One good turn half way through is good,

Do this and you will never fret over bought chips ever again. And you'll live longer.