Start by boiling water in a kettle until it reaches a rolling boil. Measure 1 tablespoon of dried butterfly pea flowers and steep them in 1 cup of hot water for 5–7 minutes until you notice a deep blue color developing. Once ready, strain the flowers using a fine mesh sieve and let the vibrant blue tea cool for a few minutes.

While the blue tea cools, prepare the vanilla cold foam. In a blender, combine ⅓ cup of ice-cold milk with 1 tablespoon of vanilla syrup. Blend on medium speed for about 10 seconds until the mixture is frothy and smooth.

Take a tall glass and fill it generously with ice cubes. Carefully pour the cooled blue tea over the ice, allowing it to create a stunning visual layer. Gently spoon or pour the silky vanilla cold foam on top.

Present your Iced Blue Tea Latte as a layered drink to showcase its gorgeous colors. Optionally, give it a gentle stir to blend the flavors before serving.