Editing Beer (section)

=== Packaging ===

{{Main|Beer bottle|Drink can}}

[[File:Dutch beers.jpg|thumb|A selection of Belgian, Danish, Dutch, German, and Irish beers]]

Most beers are cleared of yeast by [[filtered beer|filtering]] when packaged in bottles and cans.<ref>[https://books.google.com/books?id=-FviAgcmo90C&dq=beer+classification+ale+lager&pg=PA59 Google books] Charles W. Bamforth, ''Beer: Tap into the Art and Science of Brewing'' pp. 58–59, Oxford University Press US (2003), {{ISBN|0-19-515479-7}}. Retrieved 29 September 2008.</ref> However, [[bottle conditioning|bottle conditioned]] beers retain some yeast—either by being unfiltered, or by being filtered and then reseeded with fresh yeast.<ref>[https://books.google.com/books?id=GG-60Vtl81EC&dq=beer+bottle+conditioned&pg=PA370 Google Books] T. Boekhout, Vincent Robert, ''Yeasts in Food: Beneficial and Detrimental Aspects'' pp. 370–371, Behr's Verlag DE (2003), {{ISBN|3-86022-961-3}}. Retrieved 29 September 2008.</ref> 

Many beers are sold in cans, though there is considerable variation in the proportion between different countries. In Sweden in 2001, 63.9% of beer was sold in cans.<ref>{{cite web |title=European Beer Statistics—beer sales by package type|publisher=European Beer Guide|url=http://www.europeanbeerguide.net/eustats.htm#package|access-date=5 April 2007|archive-url=https://web.archive.org/web/20070426040130/http://www.europeanbeerguide.net/eustats.htm|archive-date=26 April 2007 |url-status=live}}</ref> People either drink from the can or pour the beer into a glass. A technology developed by [[Crown Holdings]] for the 2010 [[FIFA World Cup]] is the 'full aperture' can, so named because the entire lid is removed during the opening process, turning the can into a drinking cup.<ref>{{cite web |url=http://www.packwebasia.com/design/packaging-materials-innovation/695-full-aperture-end-technology-makes-drinking-easy |title=Pack Web Asia – Full aperture end technology makes drinking easy |work=Pack Web Asia |url-status=dead |archive-url=https://web.archive.org/web/20131202230222/http://www.packwebasia.com/design/packaging-materials-innovation/695-full-aperture-end-technology-makes-drinking-easy|archive-date=2 December 2013}}</ref> Cans protect the beer from light (thereby preventing spoilage) and have a seal less prone to leaking over time than bottles. Cans were initially viewed as a technological breakthrough for maintaining the quality of a beer, then became commonly associated with less expensive, mass-produced beers, even though the quality of storage in cans is much like bottles.<ref>{{cite web |url=http://www.allaboutbeer.com/features/packaging.html |title=Beer Packaging Secrets |publisher=All About Beer Magazine |access-date=5 November 2007 |quote=From a quality point of view, cans are much like bottles. |archive-url=https://web.archive.org/web/20070928060803/http://www.allaboutbeer.com/features/packaging.html |archive-date=28 September 2007}}</ref> Plastic ([[Polyethylene terephthalate|PET]]) bottles are used by some breweries.<ref>{{cite web |url=http://www.packaging-gateway.com/projects/holsten/ |title=Holsten-Brauerei Pet Line for Bottled Beer, Brunswick, Germany |publisher=Packaging-Gateway.com |access-date=5 November 2007}}</ref>