[header] How to make milk tea [title] Boil the water. [step] Add the water to a tea kettle and heat it on the stove over medium to medium-high heat until it reaches a boil. [substeps] Many tea kettles will whistle when done, but some do not, so you may need to be vigilant. 
You could also use a small saucepan or electric hot pot to boil the water. Note that you can boil water in the microwave, but you should boil the water in short 1 to 2 minute intervals to avoid superheating it.