The length of time you need to steam is dependent on the depth of the hole you make into the tofu. A very shallow hole will only need 8 minutes in the steamer.
More pickled cucumbers (醬瓜) can be used to give the dish a very salt heavy flavor.
If you want to thicken the juice in the steamer before serving, you can use cornstarch.
Modified from 醬缸的豐餘.