Add mint leaves and matcha green tea syrup to highball glass and press with muddler to release the mint oils and combine the flavors.
3 fresh mint leaves, ½ ounce matcha syrup
Fill glass ¾ full with ice then pour in the rum, lime juice, and top up with club soda.
ice, 2 ounces rum, ¾ ounce lime juice, club soda
Stir to combine then add any desired garnishes. Serve immediately and enjoy responsibly!
Notes
Making the Matcha Syrup
Add 1 ½ cup sugar, 1 cup water, and a tablespoon of matcha powder to a saucepan over medium heat and stir to dissolve.
Bring the mixture to a boil then reduce heat and simmer for 10 minutes.
Remove from heat and cool fully before using. Makes about 12 ounces of syrup.
PreparationI don't recommend making this drink ahead of time because the carbonation from the club soda will go flat and the ice will melt, diluting the drink.To batch for a crowd, add 12 mint leaves and two ounces of matcha syrup to pitcher then muddle together. Fill the container ⅓ full with ice then pour in six ounces rum, three ounces lime juice, and top up with club soda. Stir and serve cold. Makes four servings.Cocktail Tool Substitutions
Instead of a bar spoon, you can use a regular table spoon or butter knife to (gently) stir.
In place of a jiggerto measure the rum and syrup, you can use a standard size shot glass, which holds about the same amount of liquid as the jigger's larger end.
And instead of a muddler, you can use the tail end of a kitchen spoon.