Add the potatoes to a pressure cooker along with water and salt and close the lid. Pressure cook for 1 whistle on high heat.
Smash each potato gently using a potato masher. Do not over smash otherwise they will disintegrate while frying.
Smashed Potato. Smash all the potatoes in a similar way.
Heat oil for frying in a pan over high heat. Once the oil is hot, add a few smashed potatoes to the pan and fry until lightly browned.
Now heat the oil once again on high heat and when it is very hot, fry the potatoes a second time.
Drain on a plate lined with kitchen tissue.
Mix mayonnaise, heavy cream, cajun seasoning, red chilli powder, and cumin powder in a small bowl and whisk well.
Transfer the fried potatoes to a serving platter. Top with dressing and garnish with chopped spring onion greens..