Fill the highball glass to the top with ice.
Toss 5 - 10 mint leaves into a cocktail shaker.
Add 1 oz of strawberry simple syrup into the shaker.
Use the muddler to smush the mint leaves gently. They should not be completely torn apart. However, they should be smashed enough to release their juices.
Toss ice into the shaker.
Add 1 oz of lime juice to the shaker.
Put the shaker lid on and shake for about 15 seconds.
Take the shaker lid off and put the hawthorne strainer on the shaker.
Strain the mixture into the highball glass.
Take the jigger and measure 5 - 6 oz of club soda into the highball glass.Pro tip: if you want to skip measuring the club soda, you can. Simply pour it straight into the glass topping the glass off. Use the bar spoon, if desired, to give the drink a few good stirs.
Toss a few mint leaves on top as an optional garnish.