Pour the green tea powder, ginger powder, and a third of the pineapple juice into a mixing bowl and whisk to dissolve the powder
Pour the coconut milk into the jug.
Stir in the remaining pineapple juice and the ginger and green tea mixture into the milk. At this stage, you can include 2 tablespoons of simple syrup if you want.
Pour the mixture over a glass filled with ice.
Put in a straw and enjoy.