Curry leaves are an important part of this recipe; however, if you don’t have access to fresh curry leaves, you can add some fresh herbs at the end, such as cilantro, mint, parsley or dill. If using leftover rice, add the turmeric after the dal turns golden brown and let it cook for a few seconds before adding the rice. Mix gently, cover and cook for 5 minutes before removing from the heat and adding the lemon zest, juice and salt.