The Old Waldorf-Astoria Bar Book by Albert Stevens Crockett (1935, p.57)
| 0.5 part | gin — Gordon gin | base |
| 0.25 part | sweet vermouth — Italian vermouth | base |
| 0.25 part | dry vermouth — French vermouth | modifier |
- Build and serve cold.
In honor of John R. MacLean, proprietor of the Cincinnati Enquirer and Washington Post.