1 large cauliflower, left whole
4 green chillies, finely chopped and seeds removed
coriander leaves, to serve
4 garlic cloves, crushed
2.5cm/1in piece fresh root ginger, peeled and grated
1 unwaxed lemon, halved
600g/1lb 5oz potatoes, scrubbed, skin left on and cut into 2cm/¾in pieces
400ml tin coconut milk
200g/7oz plain flour, plus extra for dusting
25g/1oz blanched almonds, to serve
1 tsp baking powder
salt and freshly ground black pepper
4 tbsp coconut oil
1 tbsp black mustard seeds
2 tsp ground turmeric
50g/1¾oz Greek-style yoghurt (or a thick dairy-free alternative), to serve
200g/7oz Greek-style yoghurt or 150ml/5fl oz warm water