Maybe it’s been awhile since you’ve had a Whiskey Sour cocktail; if so, it’s definitely time to revisit this old-school classic, made only with the freshest ingredients.
Combine bourbon, lemon juice, lime juice, and simple syrup in a cocktail shaker. Fill shaker with ice, cover, and shake vigorously until outside of shaker is very cold, about 20 seconds.
Strain cocktail through strainer or slotted spoon into an old-fashioned or rocks glass filled with ice. Garnish with cherry or orange slice, if desired.
To make simple syrup, combine equal parts sugar and water together over medium-low heat in a saucepan. Stir until dissolved, then allow to cool before using. You can keep leftover simple syrup in an airtight container in the refrigerator for up to 3-4 weeks.