Rinse the short pork ribs in cold water for about 20 minutes to help get ride of some of the blood and dry well with paper towel.
Whisk together the sugar and vegetable oil in a large bowl, and add ginger slices. Add the pork ribs into the bowl and massage the ribs with the mixture, cover the bowl with a plastic wrap and put it in the lower part of the refrigerator and let it sit for about 3 hours.
Bring the pork ribs out from the refrigerator, mix fermented black bean, minced garlic, salt and cooking wine and marinating the pork ribs with the mixture for about 40 minutes under room temperature.
Move the pork ribs as well as all the ingredients used for marinating the pork onto a plate, whisk water and potato starch, and pour the mixture evenly over the pork.
Put the plate into a steam cooker and steams for 20-25 minutes under high heat.