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added first pass of Biere de Coupage
Blending by weight allows more flexibility in trial blend volumes and with a good scale it allows finer sensitivity in the amount of each beer added to trial blends. In addition, with the appropriate scale final blending may also be carried out with good precision by weight rather than estimating volumes. Small density differences between beers included in the blend can be ignored because the density range between samples is so small (an FG difference of 1.010 from 1.000 introduces a 1% error). See [https://www.facebook.com/groups/MilkTheFunk/1076426165718930/ Dave Janssen's blending spreadsheet] for a tool that will convert blended weights into volumes if you prefer to do the final blending by volume.
==Bière de Coupage==While historical uses of the term ''bière de coupage'' (biere de coupage) potentially referred to any blended beer (and even beers containing blends of sugar syrups, tartaric acid, or vinegar), in the mid to late 19th century the term tended to refer to blends of an older, usually sour beer, and a fresh beer to achieve a balance in flavors. The term has been applied to the various blending methods of lambic, specifically lambic and [http://horscategoriebrewing.blogspot.ca/2015/11/biere-de-mars-lambic-version-and-lambic.html ''Bière de Mars'' (Biere de Mars], [[Flanders_Red_Ale|Flanders red]] and [[Oud_Bruin|brown]] ales, and [http://www.browneandbitter.com/2014/07/brew-day-nineteenth-century-keeping.html 18th/19th century porters] <ref>[http://www.browneandbitter.com/2016/02/biere-de-coupage-some-background-and.html Bière de Coupage: Some Background and History, by Amos Browne]</ref>. Modern use of the term bière de coupage generally refer specifically to the blending of an older sour beer with a younger, hoppy saison. Examples include [http://jesterkingbrewery.com/beers/#beers_185 Jester King's "Das Wunderkind!"] and [http://jesterkingbrewery.com/introducing-salt-lick-pecan-wood-smoked-saison Salt Lick Pecan Wood Smoked Saison], and [http://www.ratebeer.com/beer/paradox-beer-shoga-kosho-biere-de-coupage-farmhouse-ale/263795/ Paradox Beer Company's "Shoga Kosho Biere de Coupage Farmhouse Ale"]. * [http://www.browneandbitter.com/2016/02/biere-de-coupage-some-background-and.html See ''Bière de Coupage: Some Background and History'', by Amos Browne for further reading on the history and description of Bière de Coupage.] ===Online Blog Articles===* [http://www.browneandbitter.com/search/label/Coupage Browne and Bitter, by Amos Browne.]* [http://thefarmhouseobsession.blogspot.com/search/label/Biere%20de%20Couopage The Farmhouse Obsession, by Andrew Addkison] ==Online Articles On Blending==
* [http://brouwerij-chugach.com/?p=482 Practical Blending] by Brian Hall.
* [http://www.alesoftheriverwards.com/2014/06/gueuze-blending-101-and-i-am-student.html|Gueuze Blending 101] by Ed Coffey.