In a saucepan bring 3 cups of water to a boil, add dry tapioca pearls and continue to boil on low heat for about 5-8 min, or according to package directions. Make sure you stir occasionally so the tapioca pearls don't stick together. You'll know when the tapioca is ready when it becomes a translucent black. You can also try one pearl to make sure it's cooked through.
While this is cooking, prepare your matcha. Whisk with a splash of hot water until smooth with no clumps remaining. Make this quite strong as you'll be adding vegan milk later on.
Once tapioca pearls are cooked through, remove from heat and strain. Transfer to a bowl and cover with just enough water so it doesn't dry out, and add 2 tablespoons of sweetener.
To assemble, strain and divide the cooked tapioca between 2 cups. Add ice if desired, pour whisked matcha into each glass, and finish with non-dairy milk.
Add additional sweetener as needed, and enjoy! Don't forget to use a re-usable metal bubble tea straw :-)