Once it has simmered, start the process of tea pulling by placing the sackcloth bag on top of another kettle and pour the tea over top. Then, place the bag on top of the other kettle and pour the tea over top. Repeat these steps once. In total, the tea will be pulled four times.
Rewarm
Return the tea to the stove and simmer it for 15 minutes or until rewarmed.
Assemble
When you serve the tea, pour enough evaporated milk into a serving cup to fill it one-third of the way. Add enough black tea on top to fill the remaining two-thirds of the cup. Stir in a spoonful of sweetened condensed milk until it dissolves.
Serve the tea right away for warm version.
Video
Notes
Note1: This can make around 7 cups of hong kong milk tea. You can also use the tea base for coffee milk tea, coffee boba, and iced lemon tea.