There are a few key ingredients that are essential for making an old fashioned cocktail. Bourbon, sugar, bitters, and water are all necessary. The bourbon can be substituted with another whiskey, but the other ingredients must remain the same.

To make the drink, combine the bourbon, sugar, and bitters in a glass. Fill the glass with ice and add water. Stir until the sugar is dissolved. Serve with a lemon twist or orange slice, if desired.

The old fashioned is …