Preheat the oven to 200°C.
Heat a griddle pan until it is smoking hot.
Rub the pork with oil, season, and chargrill for 3 minutes per side until cooked.
Squeeze excess water from the grated potato using a tea towel and season.
Fry the potato in half the butter in an ovenproof pan until golden on both sides.
Bake the rosti in the oven for 8 minutes until crisp.
Simmer the apricot, chilli, vinegar, honey, and water in a pan until thickened.
Stir fry the leeks in hot vegetable oil until golden-brown and crisp.
Serve the pork on the rosti topped with apricots and leek garnish.