Prepare your wok and heat cooking oil. Add in your sugar,then your red onion and garlic. Fry until garlic golden color and aroma come out then add in your pork. Leave it for about 3minutes with cover. Then add in potato and pineapple.leave it again about 5minute with slow heat and cover your wok. This is very important to let the meat absorb pineapple and potato flavor.add in very little water.as u can see below my water ratio is that much.enough to not make the dish dry.