Peel the parsnips and discard the skin. Continue peeling the parsnips into ribbons. Melt half the butter with the sunflower oil in a large frying pan and get it really hot, as you want the parsnips to start browning almost immediately once they hit the pan. Don’t cram them all in a small pan either or it won’t happen. Add the parsnip ribbons and fry for 4-5 minutes over a high heat until tender and browned, stirring constantly. Tip onto a plate covered with a little kitchen paper to mop up any excess butter and set aside.