Free Beer For Geeks (Free As In Freedom)

Vores Øl (Danish for Our Beer) is presented as the first open source beer. Today also known as Free Beer. The recipe is published under a Creative Commons license. The beer was created by students at the IT-University in Copenhagen together with Superflex, a Copenhagen-based artist collective, to illustrate how open source concepts might be applied outside the digital world. The students brewed the first 100 litre batch, titled 'version 1.0', of the dark heavy beer in the school cafeteria, and created label designs and a website to promote the beer and publish the recipe.


Recipe

The following recipe is as shown on the official website (As of September 2005), although other variants may exist due to the freedom given to modify the recipe.

Recipe for approximately 85 l (approximately 6% alcohol by volume).



Malt extract

Four types of malted barley are used:
6 kg pilsner malt
4 kg münsner malt
1 kg caramel malt
1 kg lager malt

The malt is crushed and put in 55–60 °C hot water for 1–2 hours.

The mash is filtered and the liquid now contains about 10 kg malt extract.


Taste and sugar

50 g Hallertauer (Northern Brewer) hops
60 g Tettnang hops
300 g guarana beans (Guarana beans can typically be bought at health food stores).
4 kg sugar

The malt extract is brought to a boil in a large pot with Hallertauer NB hops and approximately 70 l (18.5 gal) of water.

After half an hour, the guarana beans and sugar are added.

The mixture simmers for about an hour, the heat is turned off, and the Tettnang hops are added and left to sit for 10 minutes. The mixture is then filtered and cooled in a sealed container.


Fermentation

Yeast is added and the beer is fermented at room temperature for approximately 2 weeks.

When the beer is fully fermented, it is transferred to bottles. First 4 g sugar is added per liter and some yeast from the bottom of the fermentation tanks for priming.

The beer is then left in the bottles at room temperature for 8-10 days for carbonation.

source :
http://www.superflex.net/projects/freebeer/
http://freebeer.org