Lingkan Reang
Heat oil, add mustard, urad dal, asafoetida, and curry leaves, then saute sliced onions, green chilies, and salt until golden.
Add ginger garlic paste, cook for a minute, then stir in turmeric powder and a splash of water.
Mix in boiled mashed potatoes and garnish with coriander leaves for the potato filling.
For red chutney, toast chana dal, then blend with other ingredients, adding tamarind and water to make a smooth paste.
Spread dosa batter thinly, drizzle with oil, and top with red chutney.
Add potato masala, fold the dosa, and serve.