In a mixing bowl, add 2 cups boiled and grated potatoes, 1 tbsp green chilli paste, salt to taste, 1 tsp red chilli powder, 1 tsp coriander powder, 1 tsp cumin powder, 1 tsp chaat masala, 1 tsp crushed fennel powder, 1 tsp kasuri methi, 1 tsp garam masala, ½ tsp amchur powder, and 2 tbsp tapkir flour. Mix well.