How Beer is Made

July 6th, 2009 | by Carleton

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Beer is made from four basic ingredients: Barley, water, hops and yeast. The basic idea is to extract the sugars from grains (usually barley) so that the yeast can eat it up and spit out alcohol and CO2 thus making beer.

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The brewing process starts with grains, usually barley (although sometimes wheat, rye or other such things.) The grain is harvested and processed. This is done by heating, drying out and cracking the grain. The main goal of malting the grains to isolate the enzymes wanted by brewers so that it’s ready for mashing.

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The grains then go through a process know as mashing, in which they are steeped in hot, but not boiling, water for about an hour, sort of like you were making tea. This activates enzymes in the grains which causes it to begin to break down and release the sugar inside of it. Once this is accomplished you drain the hot water from the mash that’s full of the sugar from the grains. You’ve now got a hot, sticky sweet liquid called wort which is basically unmade beer, sort of like dough is unmade bread.

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The wort is boiled for about an hour during which time hops are added at various points.
What are hops? Hops are the small, green cone-like fruit of a vine plant. They provide bitterness to balance out all the sugar in the wort and provide flavor. They also act as a natural preservative, which is what they were first used for. (For more info on hops take a look at our article on the subject.)

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Once the hour long boil is up the wort is cooled, strained and filtered. It’s then put in a sealed container and yeast is added to it. The brewing is now complete and fermentation begins. The beer is then stored for a couple of weeks at room temperature (in the case of ales) or many many weeks at cold temperatures (in the case of lagers) while the yeast works its fermentation magic. Basically the yeast eats up all that sugar from the grains that’s in the wort and spits out CO2 and alcohol as waste products. (For more info on the difference between ales and lagers check our article here.)

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You’ve now got alcoholic beer, however it is still flat and uncarbonated. The flat beer is bottled, at which time it is either artificially carbonated like a soda, or if it’s going to be ‘bottle conditioned’ it’s allowed to naturally carbonate via the CO2 the yeast produces. After allowing it to age for anywhere from a few weeks to a few months you drink the beer, and it’s delicious!

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Categories: Beer Education, General

View Comments to “How Beer is Made”

  1. “sort of like you were making tea”

    Mmmmm… delicious, delicious beer-tea…..

  2. “sort of like you were making tea”

    Mmmmm… delicious, delicious beer-tea…..

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  4. [...] process starts after the beer has been brewed, but remains uncarbonated and unbottled. The beer is loaded into a steel barrel, or cask, similar [...]

  5. [...] we’ve explained what hops are and covered how they are used in the brewing process, but that’s not all hops have to offer. Despite what some companies would have you think, [...]

  6. [...] is usually placed in barrels for aging after primary fermentation is complete and before it has been carbonated. A variety of barrels can be used, but brewers [...]

  7. [...] Environmentally sustainable life and work can be tough for most of us, and it’s even more difficult for those in isolated locations like Alaska. That hasn’t stopped the Alaskan Brewing Company from taking extra steps for the benefit of the planet. Due to their remote location and lack of natural resources, many basic ingredients and supplies must be shipped long distances. Essential items such as heavy canisters of CO2 to artificially carbonate their beer must endure a long and treacherous journey. The brewers found themselves constantly having tons of CO2 canisters shipped 900 miles from Seattle to their facility in Juneau. The cost of this operation and the gas required for it was not sustainable, both for their pocketbooks and their carbon footprint. Instead, the brewery developed a unique system to recapture and reuse the CO2 that is naturally produced in the brewing process. [...]

  8. [...] their yeast through spontaneous fermentation of wild, natural yeast. The unfermented beer (known as wort) is laid out by the brewer in the open air and wild strains of yeast and bacteria are allowed to [...]

  9. [...] of the main things that gives it its creamy goodness. During the brewing process most sugar in the wort (pre-beer) is fermented into alcohol by yeast. However, there is always some sugar that the yeast is unable to [...]

  10. [...] we’ve mentioned before, when yeast is introduced to wort (pre-beer) it will eat the sugars for energy and expel CO2 and alcohol as waste products, a process known as [...]

  11. [...] mead brewing process is very similar to the beer brewing process. Both start with a sugar-rich substance, (with beer it’s grains, with mead it’s honey) which is [...]

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