400g/14oz cauliflower, roughly chopped into small pieces or coarsely grated
1 tsp chilli flakes (optional)
5cm/2in piece fresh root ginger, peeled and finely grated
1 lemon, juice only
200g/7oz onion, roughly chopped
200g/7oz frozen or fresh spinach, thawed if frozen
400g tin green lentils, drained and rinsed
salt and freshly ground black pepper
2 tbsp garam masala, plus extra to garnish
2 tbsp olive oil
2 vegetable stock cubes