In a food processor shred the potatoes. Take a muslin cloth/handkerchief and spread it on a bowl. Transfer the potatoes onto the cloth. Bring edges of cloth together and squeeze firmly to drain the excess liquid.
In a bowl add drained potatoes, ginger-garlic-chili paste, chaat masala, mint powder, dry mango powder, all purpose flour, eggs, salt, freshly ground pepper and toss to combine.
Heat 1/4 inch of oil until hot. Once hot, drop heaping spoonfuls of potato mixture and flatten slightly. Cook until crisp and golden brown on both the sides