Sweet potato: 200g (1 large, peeled and cubed), Red lentils: 100g (1/2 cup, dry), Onion: 100g (1 medium, diced), Carrot: 75g (1 medium, diced), Celery: 50g (1 stalk, diced), Garlic: 6g (2 cloves, minced), Ginger: 5g (1 tsp, grated), Vegetable broth: 500ml (2 cups), Coconut milk (light): 125ml (1/2 cup), Curry powder: 5g (1 tbsp), Turmeric: 2g (1 tsp), Cumin: 2g (1 tsp), Olive oil: 10ml (2 tsp), Cilantro: 5g (1 tbsp, chopped), Lemon juice: 5ml (1 tsp), Black pepper: to taste