Grilled Sweet Potatoes

The best sweet potato that we get in England is orange-fleshed and usually comes from Israel or South Africa. The variety we have in New Zealand is called ‘kumera’ and has a striking purple-coloured flesh and skin. It was the ability to grow and store these tubers that determined how well a Maori tribe survived from one season to the next. In Wanganui we ate them as often as potatoes and cooked in the same way, and in restaurants where I’ve worked this has been my favourite way of serving t