title_body: Irish Cream Liqueur chemistry
upvoted_answer: Baileys and other Irish Cream manufacturers state that their liqueurs do not need to be refrigerated. As long as they are stored between recommended temperatures of 41ºF/5ºC and 70ºF/21ºC and kept out of direct sunlight, they have a shelf-life of around 2 years.
  The alcohol in the product acts as the preservative on its own - so no need to look for anything containing artificial preservatives (in the cases where you can actually  find an ingredients label.)
  As far as an &quot;unrefrigerated-single-serve-coffee-creamer&quot; version goes - as with almost all types of alcohol, there are plenty of companies that produce miniature versions of Irish Cream, Baileys included:
  
  Considering that the shelf-life is going to be around 2 years whether the bottle is open or not, the miniature versions are manufactured more for consumer convenience than for shelf-life stability.