What’s the secret to the perfect martini? Shaken? Stirred? Or something else? If you don’t know the answer to that question, the United States forestry department, of all places, has your back.

Taking time out from their busy schedules, the ladies and gentlemen at the department created a surprisingly well-done and complicated infographic on some classic cocktails.

The chart comes from the U.S. Department of Agriculture Forest Service back in 1974 – where they clearly had a lot of fun. The recipes were created by ‘self appointed barmasters’, and checked by individuals named “I Mixum”, “Ima Sot”, and “Jim Beam”.

You can find the original document stored online at the U.S. National Archives Catalog.