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Beer rating is the process of assessment and evaluation of beer by use of a points-based system. [1] [2] [3] The process is similar to that used in beer judging competitions, such as those organised by the Beer Judge Certification Program (BJCP) in America, [4] though the participants are consumers so it may be termed a score-rated recommendation system. [5]
The International Bitterness Units scale, or IBU, is used to approximately quantify the bitterness of beer. This scale is not measured on the perceived bitterness of the beer, but rather the amount of iso-alpha acids. [17] There are several methods to measure IBU. The most common and widely used way is through spectrophotometry. [18]
The Standard Reference Method or SRM [1] is one of several systems modern brewers use to specify beer color. Determination of the SRM value involves measuring the attenuation of light of a particular wavelength (430 nm) in passing through 1 cm of the beer, expressing the attenuation as an absorption and scaling the absorption by a constant (12.7 for SRM; 25 for EBC).
There are many scales for rating beer among beer journalists and beer sommeliers. Different magazines and experts often use their own scale, for example the famous British sommelier Jancis Robinson uses a scale between 1 and 20 [3] and the famous American sommelier Joshua M. Bernstein uses a scale between 1 and 100. [4]
The company rates spirits, wines and beers. It does not accept advertising from any company that submits their products for review. The judging ratings range from 96 to 100 for superlative to 80 and below for not recommended. Jerald O’Kennard, Director of the Beverage Testing Institute, said that 94 is an extremely good score, and unusually high.
For example, for a typical strength beer, original gravity (abbreviated OG) could be 1.050 and FG could be 1.010. Several different scales have been used for measuring the original gravity. For historical reasons, the brewing industry largely uses the Plato scale (°P), which is essentially the same as the Brix scale
A common approach is to analyze the appearance, smell, and taste of the beer, and then make a final judgment on the beer's quality. There are various scales used by beer journalists and experts to rate beer, such as the 1-20 scale used by British sommelier Jancis Robinson and the 1-100 scale used by American sommelier Joshua M. Bernstein.
On 1 January 1980, Britain adopted the ABV system of measurement prescribed by the European Union, of which it was then a member. The OIML recommendation for ABV used by the EU states the alcohol by volume in a mixture containing alcohol as a percentage of the total volume of the mixture at a temperature of 293.15 K [20.00 °C; 68.00 °F].