Cut potatoes into bite-sized pieces and soak in water. Drain the water.

Place potatoes and 1 tbsp water in a microwave-safe container, cover loosely with plastic wrap, and microwave at 600W for 5 minutes until soft. Drain water and mash with a fork while hot.

Mix mashed potatoes with milk and salt and pepper. Divide into 6 portions.

Divide pizza cheese into 6 portions and shape into small balls.

Wrap each cheese ball with mashed potato mixture and shape into a round ball. Wrap each ball with pork slices and coat with cornstarch.

Heat salad oil in a pan over medium heat. Place wrapped balls seam-side down and cook until pork changes color. Roll to cook evenly on all sides.