Mince the onion and microwave it in a heatproof container covered with plastic wrap for 1 minute at 600W. Let it cool.

In a bowl, soak breadcrumbs in milk.

In another bowl, mix ground pork, minced onion, soaked breadcrumbs, salt, and pepper until sticky. Divide into 4 portions and wrap each portion around 1/4 of the pizza cheese, forming balls.

Coat each ball in flour, then beaten egg, and finally breadcrumbs.

Heat salad oil in a pot to 170°C and deep-fry the balls for 5–7 minutes until golden brown.