You see, my husband likes Whiskey Sours, and my mom likes to play with recipes — especially for making things that are often prepackaged, like mixes. When she saw this recipe in Bon Appetit, she thought it would be fun to make and also that Jason might like it as it has that same sort of sweet-and-sour idea as the Whiskey Sour.
Note: If you are planning a Derby party, you might want to make the syrup a day ahead so it will be cool and ready to use.
To make the syrup: Bring zest, sugar, and water to a boil in a small saucepan, stirring until sugar is dissolved. Let cool; cover and chill at least 2 hours. Strain syrup into a small jar or bowl.
For each cocktail, muddle 1 piece of orange, a small handful of mint sprigs, 1 oz. orange syrup, and a few dashes of orange bitters in a double Old Fashioned glass or a julep cup. Add 2 oz. bourbon and stir to combine. Fill glass with crushed ice and garnish with more mint.