Boil the water in a pot. Add the tea bag, cover the pot, and leave the tea for steep for about 5 minutes. Remove the tea bag and let it cool to room temperature. Then chill it in the fridge.
In a saucepan over medium heat, add strawberries, sugar, and water. Cook until the strawberries become mushy, stirring occasionally.
Use a fork to mash the strawberries completely. Continue to cook and let the mixture simmer for about 10 minutes. Remove from the heat and let it cool slightly.
Strain the strawberry syrup through a sieve. Set aside.
According to the package instructions, make the boba. Remove the boba from the pot using a slotted spoon and let it cool to room temperature. Stir the boba into the strawberry syrup so that they won’t stick together.
In a tall glass, add ice, then add half of the strawberry boba.
Pour half of the chilled tea and milk. Stir everything together. Repeat with the rest. Serve and enjoy!