Mash the strawberries (or dice them in small cubes) and sweeten. Let sit for a while, if using sweetener in powdered form (it usually takes less than 10 minutes to dissolve). For a smooth consistency, blend the strawberries.
While the strawberries macerate, prepare the matcha. I find it easier to avoid lumps when mixing first the powder with a small amount of water (around 1 Tbsp. from the 3 you will use).Once I have a thick matcha concentrate, I add the rest of the water and whisk or shake it.
Assemble the drink following this order: strawberry- ice cubes (if you want layers) - milk - matcha
Video
Notes
The estimated calories amount was calculated using xylitol
I like my drinks on the lesser sweet side: please adapt to your taste if you prefer it sweeter