Spare ribs in plum sauce (dim sum style)

Today I've tried a new recipe of spare ribs in plum sauce, as my husband and son love the dim sum style spare ribs, every time they will order 3-4 plates of spare ribs dim sum, so I tried to cook it not steaming in a small plate but using pressure cooker , the feed back was : good , 95% as sold at the dim sum restaurant, hehehe... ( the 5% was I do not have ginger so I ignore it...that's the diff..)