Boil the potatoes for 5 minutes. Meanwhile, heat the oil in a frying pan and gently fry the onion for 8 minutes.

Add the garlic and spices, then fry for 2 minutes more.

Drain the potatoes and tip in the onion mix. Turn up the heat and shake the potatoes around so they are all covered.

Cook for 10 minutes more until tender, then sprinkled with cayenne and served.