Celeriac & kale salad with sweet chilli walnuts

Preheat the oven to 180oC, gas mark 4. For the nuts, put the sugar, salt, oil and chilli flakes in a small saucepan with 1 tbsp water. Bring to the boil over a medium heat, stirring frequently, then add the nuts. Cook for another 30 seconds, stirring to combine, then spread out on a baking tray lined with baking parchment. Bake for 12-15 minutes until golden. Remove from the oven, leave to cool, then roughly chop and set aside.

Put the lemon juice, oil, preserved lemon skin (if using) and salt in a jar with plenty of freshly ground black pepper. Shake to combine. In a large bowl, mix the kale and cranberries, then thoroughly massage in the dressing using your hands (this helps soften the kale). Set aside for 10 minutes, then stir in the celeriac and nuts to serve.