This recipe calls for galangal; it is a knobby tuber similar to ginger, which can be used instead.
The tofu in this came out really well. The jalapenos give it a lot of heat and the fish sauce seems to give it a savory appeal. My only complaint is that while there was plenty of the ginger mixture to coat the tofu, there wasn't much sauce left to spoon over the veggies. Perhaps I cooked it down too much, but it seems it needs a little more sauce to make everything congeal.