-
1
Heat 1/4 cup oil in a 4- to 5-quart heavy pot over moderate heat until hot but not smoking, then cook onion with 1/4 teaspoon salt, stirring occasionally, until golden, 8 to 10 minutes.
-
2
Meanwhile, puree ginger, garlic, and 1/3 cup water in a blender. Add puree to golden onion and cook, stirring, until water is evaporated and oil visibly separates from onion mixture, about 5 minutes. Add curry powder, turmeric, and cumin and cook over low heat, stirring, 1 minute. Stir in lentils and remaining 5 cups water and simmer, covered, stirring occasionally, 30 minutes. Add carrots and remaining teaspoon salt and simmer, covered, stirring occasionally, until carrots are tender and lentils have broken down into a coarse puree, 15 to 20 minutes.
-
3
Stir in spinach and peas and simmer, uncovered, stirring occasionally, until peas are tender, about 3 minutes. Stir in cilantro and season stew with salt and pepper. If necessary, add enough water to thin stew so that it can easily be ladled over rice.
-
4
Just before serving, heat remaining 2 tablespoons oil in a small skillet over moderately high heat until hot but not smoking, then cook cumin seeds and red-pepper flakes, stirring, until fragrant and a shade darker, 30 to 45 seconds (be careful not to burn spices). Pour hot spice oil in a swirl over stew.
