Blend the mango until it is puree, if it is not too sweet, sweeten with maple syrup, bee syrup or your favorite sweetener.
Place the puree in two glasses and fill with ice to the top.
Mix the matcha with the hot water and mix with a frother to remove all lumps. If you only want 1 serving, just use ¼ cup of hot water with 1 teaspoon of matcha powder.
Transfer to a cocktail shaker, shaker or mason jar with a lid, add plenty of ice and sweeten to taste with maple syrup, honey, stevia, monk fruit, sugar or your favorite sweetener to taste.
To serve, place half of the mango puree in a glass, add ice (do not add the ice from the beginning or the puree mixture will remain in the entire glass).
Carefully add the homemade oat milk and then the iced matcha.
Before serving, mix a little to incorporate flavors and enjoy.