Most people believe an old fashioned is a bourbon drink, however the most rudimentary definition states it must contain spirit, bitters, and sugar. That adds up to A LOT of possibilities!
Classic Old Fashioned 2 ounces bourbon or rye .25 ounces simple syrup (1:1) 1-2 dashes Angostura bitters 1-2 dashes Regan's orange bitters Stir. Strain over large format ice. Express oils from lemon across the top of the cocktail, making sure to rub oils around the rim and down the entire glass.