A flavourful rasam of tomatoes and toor dal simmered in tamarind water flavoured with spices. Terrifically tangy and sour Tomato Rasam is a delicious soup-like dish that can be enjoyed over rice or on its own as a hearty soup. Here I share step-by-step instructions with photos for preparing this recipe two different ways, as a traditional classic tomato rasam (thakkali rasam) or try a spicier Andhra-style version of tomato rasam. Tomato rasam is a popular South Indian dish that is known for being equally healthful and delicious. In fact, it’s often served as a spiced hot drink that helps ease cold symptoms and digestion issues.