Sago Soup With Taro (西米露)

Name: Sago Soup With Taro (西米露)
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: Chinese, Asian, Vietnamese
Ingredients: 1 kg / 2.2 lb taro; 1/2 US cup sago ((also known as tapioca pearls)); 150 g / 0.33 lb rock sugar ((or to taste)); 1/2 tsp salt; 500 mL / 2 US cup coconut cream ((or coconut milk or evaporated milk)); 1 1/2 L / 6 US cup water ((for boiling sago)); 3 L / 12 US cup water ((for the ice bath)); ice; 1 L / 4 US cup water ((for the rock sugar))