Pour water and matcha into an airtight container.Use filtered water if possible. A small water bottle with a wide opening or a cocktail shaker work great.Add water in first to prevent matcha from clumping.
Close lid and shake for 10 seconds.Shake it vigorously to make sure the water and matcha get mixed well.
Add maple syrup, vanilla extract, and salt.
Close lid and shake for 5 seconds.
Pour milk into a bottle then the sweetened matcha.