If you have trouble recalling the exact measurements of a whiskey sour, this tip is for you. Follow the mantra of the 3-2-1 ratio, and you'll likely never forget it.
To make simple syrup for the "1 part sweet," heat equal parts sugar and water in a saucepan, stirring on low for about five minutes until it dissolves, then let it cool.
Put the three parts in a cocktail shaker. Shake well, then add ice cubes and shake again. Strain the contents into a glass and garnish with a slice of orange and a cocktail cherry.