To make the syrup: in a small saucepan, stir together ¼ cup water and Splenda Stevia Sweetener. Bring to a rolling boil. Remove from heat and stir in vanilla extract. Pour into a glass jar and refrigerate too cool.
To make boba, boil 3 cups of water in a saucepan. Pour in boba balls, and stir once immediately. When boba rise to the top, reduce heat, and simmer for the length of directions on the package (usually 3-4 more minutes). Using a slotted spoon, remove boba and add to a jar of vanilla syrup.
Make tea by pouring boiling water over matcha and stirring until tea is completely dissolved.
To serve bubble tea, divide the boba between two glasses, adding the desired amount of syrup for sweetness. Add 1 cup of ice in each glass, then pour 8 ounces of soy milk into each glass. Slowly pour half of the matcha tea into each glass, and stir. Sip through a large straw and enjoy!