Make the double espresso shot and leave it in the freezer to cool down.
Add matcha powder and brown sugar to a tall glass while the espresso cools down.
Add warm water to a glass with matcha and brown sugar. Using a hand-held frother, mix the matcha until there are no clumps left – approximately 5-10 seconds.
Pour matcha into a jar or a large glass. Then, add ice cubes to a jar.
Shake the oat milk carton before slowly pouring the oat milk into the jar.
Finally, slowly pour the cooled espresso into the jar to create the layers between each liquid for a visual effect.
Mix with a straw before serving. Enjoy!
Notes
Shake the oat milk carton before pouring the milk.
Add sugar to the bottom layer, so even if you want to switch the layers, sugar always goes to the bottom. Otherwise, the layers will mix while you are pouring the ingredients.
Pour ingredients slowly over the spoon to preserve the layers.