01 - In a large pitcher, combine cold water, lemon juice, and maple syrup. Stir well until the syrup is completely dissolved.
02 - In a small bowl, whisk blue spirulina powder with 1/2 cup room temperature water until fully dissolved and smooth.
03 - Pour the spirulina mixture into the lemonade base and stir until evenly colored throughout.
04 - Taste the lemonade and adjust sweetness or lemon juice as desired.
05 - Add ice cubes, lemon slices, and fresh mint leaves to the pitcher or serving glasses. Serve immediately while chilled.