Gather all the ingredients for your blue matcha latte.
Pour the milk, dried butterfly pea flowers, and vanilla extract into a small saucepan. Stir until the vanilla extract is fully mixed into the milk.
Warm the mixture over medium-low heat, stirring occasionally to prevent a film from forming on top.
Let it heat for about 5 minutes to infuse the milk and bring out that natural blue color. Lower the heat if it starts to boil.
Strain out the flowers using a fine mesh strainer.
Stir in the maple syrup, then whisk continuously until the latte becomes lightly frothy.
Pour into a glass mug, sprinkle a pinch of cinnamon on top, and enjoy.