Shred the cabbage and mince the onion.

Place the cabbage and onion in a microwave-safe container, cover loosely with plastic wrap, and microwave at 600W for 2 minutes. Let cool and drain excess water.

In a bowl, mix breadcrumbs and milk until combined. Add the microwaved vegetables, ground meat, and salt and pepper. Mix until sticky and well combined.

Heat salad oil in a frying pan over medium heat. Shape the mixture into patties and cook until browned on one side. Flip, cover with a lid, and cook on low heat for 5 minutes until fully cooked.