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OpenCola is a brand of
open-source cola Open-source cola is any cola soft drink produced according to a published and shareable recipe. Unlike the secretive Coca-Cola formula, the recipes are openly published and their re-use is encouraged. The texts of OpenCola and Cube-Cola recipes ...
whose list of ingredients and preparation instructions are freely available and modifiable. Anybody can make the drink, and anyone can modify and improve on the recipe. It was launched in 2001 by free software P2P company Opencola, to promote their company.


Background

The original version 1.0 was released on 27 January 2001 by Grad Conn,
Cory Doctorow Cory Efram Doctorow (; born July 17, 1971) is a Canadian-British blogger, journalist, and science fiction author who served as co-editor of the blog ''Boing Boing''. He is an activist in favour of liberalising copyright laws and a proponent o ...
, and John Henson. The current version is 1.1.3. Although originally intended as a promotional tool to explain free and open source software, the drink took on a life of its own and 150,000 cans were sold. The Toronto-based company Opencola became better known for the drink than the software it was supposed to promote. Laird Brown, the company's senior strategist, attributes its success to a widespread mistrust of big corporations and the "proprietary nature of almost everything".


Flavouring formula

The flavouring formula for OpenCola is: * 10.0 g food-grade gum arabic * 3.5 mL orange oil * 3.0 mL water * 2.75 mL lime oil * 1.25 mL cassia oil * 1.0 mL
lemon The lemon (''Citrus limon'') is a species of small evergreen trees in the flowering plant family Rutaceae, native to Asia, primarily Northeast India (Assam), Northern Myanmar or China. The tree's ellipsoidal yellow fruit is used for culina ...
oil * 1.0 mL nutmeg oil * 0.25 mL
coriander Coriander (;
oil * 0.25 mL
neroli Neroli oil is an essential oil produced from the blossom of the bitter orange tree (''Citrus aurantium subsp. amara'' or ''Bigaradia''). Its scent is sweet, honeyed and somewhat metallic with green and spicy facets. Orange blossom is also extract ...
oil * 0.25 mL lavender oil


Concentrate formula

* 2.36 kg plain granulated white table sugar * 2.28 L water * 30.0 mL
caramel color Caramel color or caramel coloring is a water-soluble food coloring. It is made by heat treatment of carbohydrates (sugars), in general in the presence of acids, alkalis, or salts, in a process called caramelization. It is more fully oxidized tha ...
* 17.5 mL (3.50 tsp.) 75% phosphoric acid or
citric acid Citric acid is an organic compound with the chemical formula HOC(CO2H)(CH2CO2H)2. It is a colorless weak organic acid. It occurs naturally in citrus fruits. In biochemistry, it is an intermediate in the citric acid cycle, which occurs in t ...
* 10.0 mL (2.00 tsp.) flavouring formula * 2.5 mL (0.50 tsp.) caffeine (optional)


Dilution

After mixing up the concentrate to the prescribed recipe (including all recommended safety precautions), the syrup is diluted 5:1 with ("preferably sodium-free") soda water to make the finished drink; at this dilution, the above combination of ingredients will yield approximately 24 litres of OpenCola. The full recipe also includes instructions for home-made soda water produced from basic ingredients such as yeast and sugar in order to make the entire process open source; otherwise there would be a need to use commercially produced bottled or canned soda, or consumer
carbonation Carbonation is the chemical reaction of carbon dioxide to give carbonates, bicarbonates, and carbonic acid. In chemistry, the term is sometimes used in place of carboxylation, which refers to the formation of carboxylic acids. In inorganic ...
machines with commercially manufactured carbon dioxide canisters.


See also

* Cube Cola *
Coca-Cola formula The Coca-Cola Company's formula for Coca-Cola syrup, which bottlers combine with carbonated water to create the company's flagship cola soft drink, is a closely guarded trade secret. Company founder Asa Candler initiated the veil of secrecy tha ...
*
Free Beer Opay Beer, originally known as Vores øl - An open source beer (English: ''Our Beer''), is a brand of beer and the first with an "open"/"free" brand and recipe. The recipe and trademark elements are published under the Creative Commons CC B ...
, open source beer, formerly known as ''Our Beer'' ( da, Vores øl) * List of brand name soft drinks products * List of soft drink flavors


References


External links


OpenCola soft drink

Cube-Cola
Bristol, UK
How to Make OpenCola
- WikiHow
The recipe from Wiki-How
condensed into a single, easily printable page
OpenSoda.org
a continuation of the OpenCola work for recipe and methodology
OpenCola
on GitHub {{DEFAULTSORT:Opencola (Drink) Cola brands Open content projects Products introduced in 2001 Copyleft media