Thattu Dosa with Sambar by Vishnu Bhavan is a pre-packaged, ready-to-eat frozen meal featuring thick, spongy dosa served with a flavorful sambar. The dosa batter is made from a blend of rice and black gram, while the sambar contains split pigeon peas, vegetables like potato, tomato, and carrot, and a blend of spices including coriander, chili powder, and tamarind, all prepared with coconut oil. The 454g package is a convenient, frozen South Indian breakfast or meal that requires thawing and microwaving before consumption.