How to Make It
In a large saucepan, heat 3 tablespoons of the oil. Add half of the pork at a time, season with salt and pepper and cook over high heat, stirring once, until lightly browned, about 4 minutes. With a slotted spoon, transfer the pork to a bowl.
Add the remaining 1 tablespoon of oil to the saucepan. Add the shallots and garlic and cook over low heat, stirring occasionally, until softened, about 5 minutes. Add the soy sauce, increase the heat to high and cook for 2 minutes. Add the water and bring to a boil. Add the sliced taro and the browned pork and its juices.
Simmer the stew over moderately low heat, stirring occasionally, until the pork and taro are tender, about 15 minutes. Season with salt and pepper and stir in the garlic chives. Let the stew stand for 5 minutes before serving.