For the wedges
2 sweet potato, cut into wedges
4 tbsp olive oil
1 tbsp thyme leaves
salt and freshly ground black pepper
chervil, to garnish
Preheat the oven to 200C/400F/Gas 6.
Toss the wedges with the oil and thyme then season well with salt and freshly ground black pepper.
Roast in the oven for 15-20 minutes, until lightly browned.
Serve in a warm bowl and garnish with chervil.