title_body: How to determine where your beer was really bottled?
upvoted_answer: The can/bottle is required to have country of origin listed on it.
  
  Most US Guinness Extra Stout is brewed in either Toronto or New Brunswick, depending on the contract brewer. All of the Guinness Draught is brewed in their historic brewery in Dublin. However, debate abounds about whether the US recipe is different.