1Boil the pigeon peas until they are soft. Drain and set aside.
Boil the potato until tender, peel, and mash it.
In a mixing bowl, combine the all-purpose flour, yogurt, and 1/4 cup vegetable oil. Knead into a smooth dough. Cover and let it rest for 30 minutes.
In a pan, heat a little oil and add cumin seeds. Once they splutter, add the boiled pigeon peas, mashed potato, coriander powder, turmeric powder, red chili powder, garam masala, and salt. Cook for a few minutes until the mixture is well combined. Let it cool.
Divide the dough into small balls. Flatten each ball and place a spoonful of the pigeon pea and potato mixture in the center. Fold the edges over to seal and shape into a ball again.
Heat oil for frying in a deep pan. Fry the kachoris until they are golden brown and crispy.
Drain on paper towels and serve hot.