Keerai sambar is a South Indian dish made with lentils, mixed greens (keerai), and a flavorful tamarind-based broth. It is typically served with rice or as a side dish for dosa or idli. The greens used in keerai sambar can vary, but popular choices include spinach, amaranth leaves, or fenugreek leaves. The dish is seasoned with a blend of spices such as mustard seeds, cumin seeds, curry leaves, and dried red chilies. Keerai sambar is nutritious, delicious, and a great way to incorporate leafy greens into your diet.