Gujarati Eggplant and Sweet Potato "Lasagna" With Kadi Sauce

Photo by Shimon and Tammar
This playful Indian take on veggie lasagna pairs chickpea-flour noodles with eggplant, sweet potatoes, and chile- and ginger-spiced tomato and yogurt sauces.
Note
If you can't find citric acid powder, substitute 1 tablespoon fresh lemon juice for it and subtract 1 tablespoon water from the 3 cups water called for in the gram flour dough.
