In a large pan over medium-high heat, saute the minced taro until lightly browned. This should take about 5 minutes. Pour into a bowl and set aside.
In the same pan, add a little more oil and saute the minced garlic and ginger for a few minutes. Then add the ground pork and cook for a few more minutes. Season with the oyster sauce.
Add the minced taro back into the pan. Then add ⅓ cup of water (or chicken broth). Stir to mix and then turn the heat to low. Simmer for about 20 minutes until the taro is very soft. Add more water/broth if it starts to look dry.
Remove from heat and pour into a serving bowl. Top with chopped green onions (optional). Enjoy with a big bowl of rice.