Sweet potato wedges make a great alternative to potato and count as one of your 5-a-day.
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.
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