To mix the sauce, combine the fermented black beans with the Shaoxing wine in a bowl. Let it sit while you prepare the other ingredients so the black beans will soften, 5 minutes or so. Once the fermented black beans turn soft, smash them with the back of a spoon to thicken the paste. It’s fine if you cannot smash the beans evenly and completely. Once done, add the rest of the sauce ingredients and mix well.