Stir in 1 tbsp curry powder, 1 tsp ground cumin, and 1 tsp ground turmeric. Cook for 1 minute, stirring continuously until fragrant.
Add 1 cup of rinsed dry red lentils and 3 cups of vegetable broth. Bring to a boil, then reduce heat to low, cover, and simmer for 20 minutes until the lentils are tender and the stew has thickened.
Remove the pot from the heat and stir in the juice of 1 whole lime.
Serve warm, garnished with 0.25 cup chopped fresh cilantro and a dollop of yogurt or raita. Serve alongside warmed naan bread.