Heat a large sauté pan, over med-high heat; add the 1/4 cup oil.
Add onion and chili and cook, stirring occasionally, about 8-10 minutes.
Add the eggplant, mushrooms, carrots, potatoes
Sprinkle 1/4 tsp salt, add garlic, turmeric, and reduce heat to med.
Cook, stirring, until the garlic and turmeric are fragrant, about 2 min.
Add tomatoes; cook, stirring, for 1 minute.
Add enough water to cover the bottom of the pan, about 3/4 cup.
Add the remaining 1/2 tsp salt and pepper, increase the heat to bring the stew to a gentle boil.
Cover, reduce heat to med-low and simmer, stirring occasionally, about 25-30 minutes.
Taste the stew as it cooks, adding a little more water if necessary
Serve with Naan.