Better Cocktails At Home: "The Prescription Julep is one of my favorite versions of the mint julep. The mellow cognac mixes with the spice of the rye and the funk of the rum. Delicious! If you only make juleps with bourbon it's time to try something new.
"I first ran across this in Imbibe! by David Wondrich. It was originally created by a doctor in 1857. I also noticed that Paul Clarke added a dash of rum to the top of his—a great addition. I'm pretty sure I could drink these all day long."