![Main reading room, Harry Elkins Widener Memorial Library, Harvard University, c.1915](https://i0.wp.com/lostcocktails.com/wp-content/uploads/2017/11/harvard_cocktail.jpg?resize=720%2C467)
- One dash gum-syrup
- Three dashes Boker’s bitters
- Half a jigger Italian vermouth
- Half a jigger brandy
- Seltzer
Mixing glass half-full of fine ice; one dash gum-syrup, three dashes Boker’s bitters, half a jigger Italian vermouth, half a jigger of brandy. Mix and strain into a cocktail-glass, then fill up with seltzer and serve quickly.