Boil potatoes in a pot of salted water for 15 to 18 minutes until soft, then drain and allow to cool.
Add the cooled potatoes to a large mixing bowl and mash with a fork. potato masher or potato ricer until smooth.
Preheat the oven to 180c / 160c fan / 350f / gas mark 4 (if using an air fryer, it only needs a couple of minutes to heat and this can be done when you are ready to cook the bites).
Line a large baking tray with non-stick baking paper or parchment paper.
Add all the other ingredients to the mashed potato (no oil) and mix until you have a well-combined dough.
Wet or oil your hands to prevent sticking, then take tablespoons of mixture and roll into balls. Repeat this with all the mixture, then place them on the baking tray, leaving room between them so they will crisp up.
Spray, drizzle or brush them with oil (if you oiled your hands for shaping, you can skip adding oil).
Bake for 15 - 20 minutes, shooggle (Scottish term for shake) the tray once during cooking) for an even golden and crisp finish.
