Boil your potatoes in salted boiling water until fork tender. Drain and allow the potatoes to steam off most of its moisture.
Transfer the potatoes into a bowl and mash it well with either a fork or a potato ricer. Add in the corn starch, parsley and spices. Mix well to combine. Grab roughly 2 tbsp of mixture and roll it into a ball with your hands. Repeat until you run out of potato mixture.
Bring a pot of neutral oil to 170C/350F and carefully drop in the potato balls. Fry for approximately 10-12 minutes or until the balls are golden brown and crispy. Drained onto a paper towel.
Grate over parmesan and serve with sweet chilli mayo.