Heat oven to 180°C.
Scrub or peel potatoes and cut into quarters (or smaller if you like).
Boil gently in salted water for around 10-15 minutes.
They shouldn't be cooked through, just soft on the outside. Drain well.
Put the lid on and give the pan a good strong shake to fluff up the outside of the potatoes.
Mix together butter, oil, lemon juice, garlic and oregano in a small bowl.
Add the mixture to the potatoes and toss briefly and gently, just to coat the potatoes.
Tip into a large roasting tray and separate so they are not crowded in the pan.
Season generously with salt and pepper.
Bake in the centre of the oven for about 30 minutes - or until golden brown on the bottom, no need to turn them.
