Dean Martin and Frank Sinatra even had their own signature burger recipe. Dean Martin’s burger recipe was surprisingly simple: one pound of ground beef and two ounces of chilled bourbon. The instructions called for dividing the meat into four patties, seasoning them with salt, grilling them over medium-high heat for about four minutes per side, and serving the burgers on a TV tray alongside the bourbon. Frank Sinatra’s recipe took a very different approach: “Call for Deano. Tell him to make you a fuckin’ burger. Drink his bourbon.” The two recipes perfectly reflected the friendship and public personas that made Martin and Sinatra such an iconic duo. Sinatra was known as the confident leader, while Martin embraced the image of the laid-back, slightly tipsy entertainer. In reality, much of Martin’s drinking reputation was part of his stage act, and the “whiskey” in his glass was often nothing more than apple juice. The pair became close during the height of the Rat Pack era, performing together in Las Vegas, starring in films, and constantly trading jokes at each other’s expense. Although their friendship had its ups and downs, their chemistry never faded. Sinatra’s commanding personality contrasted perfectly with Martin’s easygoing demeanor, making the burger gag feel completely authentic: Sinatra gave the order, Martin did the cooking, and both enjoyed a drink. Both recipes were published in The Celebrity Cookbook, a collection assembled by Dinah Shore and released in 1967, featuring recipes from many of the era’s biggest entertainers.