2 bags kale, no stems (about 320-400g/11陆-14oz)
1 onion, roughly chopped
2 sweet potatoes, peeled and chopped
freshly ground black pepper
陆 tsp freshly ground nutmeg
2 tbsp olive oil
900ml/1陆 pint good-quality vegetable stock
150ml/5fl oz milk
40驳/1陆辞锄 Parmesan, grated
200g/7oz bacon lardons