1. Boil the tapioca pearls: Bring 2 cups of water to a boil in a saucepan. Add the tapioca pearls and cook for 5-7 minutes until they float to the top and are tender.
2. Brew the tea: Steep the black tea bags in hot water for 3-5 minutes. Remove the tea bags and let the tea cool.
3. Assemble the bubble tea: Divide the cooked tapioca pearls between two glasses. Add the cooled tea, milk, and sugar. Stir well and serve with a wide straw.