Peel the elephant yam, chop it into small pieces and soak it in hot water for 1 hour.
2 cups chopped elephant yam
Drain the soaked elephant yam well.
2 cups chopped elephant yam
Transfer the drained yam to a food processor and process until coarse.
2 cups chopped elephant yam
Boil and peel the potatoes, then grate them. Add the grated potatoes, ginger, green chillies, dried mint, mango powder and salt. Mix well.
2 medium potatoes, 1 tablespoon ginger, 1 tablespoon green chillies, ½ tablespoon dried mint, ½ tablespoon mango powder, salt
Divide the mixture into 8 medium-sized cutlets and shape into round, slightly flattened patties. Freeze for 4 hours or overnight.
Preheat the air fryer to 185°C (365°F) for 5 minutes.
Arrange the frozen cutlets in the air fryer basket in a single layer and brush with some of the oil.
2 tablespoons oil
Air fry at 185°C (365°F) for 20–22 minutes. Flip the cutlets and brush with the remaining oil during cooking, then continue until firm and browned on the outside.
2 tablespoons oil