This simple combination of coarsely mashed eggplant and shallots makes a quick vegetarian side dish or main dish.
- Heat oil in a large saucepan over medium-high heat; add coriander seeds and chile; toast until the coriander turns reddish brown and the chile is slightly blackened, about 30 seconds. With a slotted spoon, transfer spices to a plate to cool. Grind in spice grinder or mortar and pestle until the mixture is the texture of coarsely ground black pepper.
- Dissolve tamarind concentrate (or lime juice) in water. Reheat the oil over medium-high heat; add mustard seeds. When the seeds begin to pop, cover the pan. As soon as the popping stops, add eggplant and shallots; cook, stirring constantly, for 1 minute. Add the tamarind (or lime juice) mixture, salt and the ground spices; bring to a boil. Reduce heat to medium-low, cover and simmer until the eggplant is fork-tender, 3 to 5 minutes. Coarsely mash the stew with a potato masher. Sprinkle with cilantro and serve.