title_body: How do popular Polish beers fit into the "periodic table of beers"?
upvoted_answer: Piwo Jasne is, translated, "light beer". It's the common market name for all 'light' beers, and they are mostly pilsners. 
  
  Piwo Ciemne - this is "dark beer", so something like ale. They are dark, as the name suggests, and usually quite sweet. 
  
  Piwo Mocne - this is simply the beer that is more condensed, so it has more alcohol. That can be light beers or dark beers (for example, very good dark strong beer "Warka Strong"). 
  
  Those names are the most popular market classifications in Poland, but usually you'll find more details on label or producer's page. For example, many beers have information, that they are pilsner-type beers.