Serves: 4 Prep time: 10 minutes Cooking time : 20 minutes Total: 30 minutes Ingredients 1 tsp ghee or sunflower oil 1/2 tsp turmeric powder 1 tbsp fresh ginger, grated 2-3 big sweet potato, peeled and cut into squares 2 cups vegetable broth 2 cups filtered water A squeeze of fresh lemon