Prepare the butterfly pea flower tea: Steep 1 teaspoon of dried butterfly pea flowers in 4 oz of hot water for 5-10 minutes. Strain the flowers, and allow the tea to cool. You can store the tea in the refrigerator for future use.
Chill the glass: Place a martini glass in the freezer for a few minutes to chill.
Combine ingredients: In a mixing glass or cocktail shaker, combine the gin, butterfly pea flower tea, and dry vermouth. Fill the glass or shaker with ice.
Stir: Using a long-handled bar spoon, stir the mixture gently for about 30 seconds or until well chilled.
Strain and pour: Strain the mixture into the chilled martini glass.
Add the magic: Slowly pour the fresh lemon juice into the cocktail. As the lemon juice mixes with the butterfly pea flower tea, it will cause the cocktail to change color due to the pH change.
Garnish: Twist a lemon peel over the surface of the cocktail to release its oils, then drop it into the glass or rest it on the rim.
Enjoy your beautiful and delicious Butterfly Pea Flower Gin Martini!