In a medium bowl, combine the fish sauce and baking soda and stir until the baking soda had completely dissolved. Add the pork, salt, galangal, cilantro, garlic, and chilies to the bowl and use your hands to mix well. When thoroughly mixed, divide the mixture into 12 balls, (about 1.5 tbsp each), arrange on a baking sheet, and refrigerate for 30 minutes.