Udupi Sambar is a tangy South Indian lentil-vegetable stew with tamarind and aromatic spices. This high protein, fiber-rich vegetarian dish is a DASH-friendly family staple that supports healthy eating.
Rinse toor dal under cold water until water runs clear, then add it to a pot with 2 cups water and 0.5 tsp turmeric powder. Simmer on medium-low heat for 20 minutes until dal is very soft, skimming foam as needed.
Chop vegetables: slice drumsticks into 2-inch pieces, dice carrot, potato, brinjal, tomato, and onion into bite-sized chunks.
In a separate pot, add remaining 2 cups water and all the chopped vegetables except tomato and onion. Bring to a boil over medium heat, then reduce to a steady simmer for 10 minutes.
Once vegetables are partially cooked, stir in softened dal, tamarind pulp, sambar powder, onion, tomato, and salt. Simmer on low for 10 more minutes, stirring occasionally to blend flavors.
In a small skillet, heat vegetable oil over medium heat. When hot, add mustard seeds and let them splutter, then immediately add dried red chilies, curry leaves, and asafoetida. Sauté briefly until aromatic, 30 seconds.
Pour the tempering into the simmered sambar, stir well, and allow it to cook for 3 more minutes to meld flavors. Taste and adjust seasoning as desired. Serve hot.