The 18th Amendment was approved for prohibition of alcohol in America, while the 21st Amendment overrode it, and thus 18.21 Bitters was born to celebrate this historic time period. The birth of craft cocktails with the use of bitters can be attributed to the Prohibition era and the frequent need to make bootleggers' unregulated liquor palatable. These bitters can be used as premium cocktail bitters, tinctures, shrubs, syrups, and tonics for a cocktail that's worthy for Prohition or modern day!