Combine pork, onion, garlic, and egg in a large bowl. Season with salt and pepper. Add water a little at a time, stirring until pork mixture absorbs it and reaches the consistency of sour cream.
Pour bread crumbs onto a plate. Scoop up medium-sized balls of the pork mixture with a tablespoon and drop into the bread crumbs; flip to coat both sides.
Heat oil in a frying pan over medium heat. Fry patties, in batches if necessary, until golden brown, 5 to 6 minutes per side.
Notes
Cook's Note:
If needed, you can add some bread crumbs to the meet mixture to help it thicken up or to help with the stickiness.