01 - Bring water to a boil in a small saucepan. Add tea bags, reduce heat, and simmer for 3-4 minutes. Remove from heat and let steep for 2 additional minutes.
02 - Remove and discard tea bags. Stir in Okinawa brown sugar while tea is hot, stirring continuously until completely dissolved.
03 - Add milk and stir well. Return mixture to low heat and warm gently for 1-2 minutes without boiling.
04 - Pour the milk tea through a fine-mesh strainer into a heatproof jug to remove any tea residues or particles.
05 - Fill two glasses with ice cubes. Pour warm milk tea over ice, stir gently to combine, and serve immediately.