Onion Dosa Recipe
Batter kissed by flame, adorned with sweet onion and green chilli simplicity elevated to ceremony.
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Ingredients
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Dosa batter
Onion topping & tempering
Finishing and serving
Method
Dosa batter
Soak
Rinse rice and urad dal separately until water runs clear. In two bowls, combine rice with fenugreek seeds and poha; combine urad dal in the other. Cover both and soak in enough water for 4–6 hours (or overnight).
Grind
Drain soaking water. Add urad dal to a wet grinder or high-speed blender with about 1/4–1/3 cup fresh water and grind to a smooth, slightly airy batter (it should be light and ribbon when dropped). Transfer to a large bowl. Grind rice mixture with poha adding small amounts of water to reach a slightly grainy but flowing texture. Combine rice and urad batter; mix thoroughly by hand or spatula to incorporate air.
Ferment
Cover the bowl with a lid and keep in a warm place to ferment 8–12 hours (6–10 hours in very warm climates). Batter should rise, look slightly bubbly and have a pleasant sour aroma. After fermentation, stir in 1 tsp salt and adjust consistency with water to a pouring but slightly thick batter (similar to heavy cream).
Onion topping & tempering
Prepare onion mixture
Heat 1 tablespoon oil in a small skillet over medium heat. Add cumin seeds and let them sizzle for a few seconds. Add asafoetida, then add the chopped onions and a pinch of salt. Sauté just until the onions soften and become translucent — 2–3 minutes; you want sweetness but not deep browning. Add green chilies, grated ginger (if using), chopped cilantro, 1/2 tsp salt, and freshly ground black pepper. Stir for 30 seconds, then remove from heat and set aside to cool slightly.
Finishing and cooking dosas
Spread dosa
Stir the fermented batter gently. Ladle about 1/3 to 1/2 cup batter (adjust to pan size) onto the hot pan near the center. Immediately, using the back of the ladle in circular motions, spread the batter outward to form a thin circle ~8–10 inches diameter. If batter is too thick to spread, add a tablespoon of water and mix.
Add topping
Drizzle a few drops of oil/ghee around the edges of the dosa. Spoon 2–3 tablespoons of the prepared onion mixture evenly over the dosa surface, gently pressing it into the batter with the back of the spoon so it adheres. If you like extra crisp edges, add a little more oil around the circumference.
Cook and finish
Cook the dosa on medium heat until the underside is golden brown and crisp and the edges lift slightly — 2–3 minutes. For a classic dosa, do not flip; fold the dosa in half or roll it and transfer to a plate. If you prefer both sides browned, flip gently and cook 30–45 seconds more. Repeat with remaining batter, wiping and re-oiling the pan between dosas as needed.