Beer
According to statistics, beer is the third most popular drink in the world (next to water and tea) and the oldest of the alcoholic beverages. It comes in hundreds of different flavors and styles and to some, is considered a hobby unto itself.
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LSD
First synthesized by Albert Hofmann, LSD has been used as both a recreational drug and a tool of psychiatry. Hugely popular in the 60's, LSD became a hippie cultural statement as much as the music did.