300驳/10陆辞锄 butternut squash, cut into 1cm/陆-inch cubes
陆 tsp red chilli flakes (optional)
2 fat garlic cloves, finely chopped (optional)
7.5cm/3 inch piece root ginger, peeled and finely grated
300驳/10陆辞锄 red lentils
salt and freshly ground black pepper
2 tbsp olive oil
1.2 litres/2 pints hot vegetable stock