Place the sugar, lemon juice, vanilla bean and water in a small saucepan. Bring to a simmer, then remove from heat. Add tea and steep for 3-5 minutes. Strain, return to the stove and bring to a boil. 

Muddle the rum and blueberries in a teacup, then pour the tea mixture over the top of the muddled blueberries.

TRY THE MOCKTAIL!