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The original gravity is the specific gravity measured before fermentation. From it the analyst can compute the original extract which is the mass (grams) of sugar in 100 grams (3.5 oz) of wort (°P) by use of the Plato scale. The symbol will denote OE in the formulas which follow.
A more attenuated beer is drier and more alcoholic than a less attenuated beer made from the same wort. Attenuation can be quantified by comparing the specific gravity — the density of a solution, relative to pure water — of the extract before and after fermentation, quantities termed the original and final gravities.
A rough conversion between specific gravity, SG, and either degrees Brix, Plato or Balling can be made by dividing the thousandths of SG above 1 (which is often referred to as gravity points) by 4. So a specific gravity of 1.048 has 48 gravity points, and 48 divided by 4 would be approximately 12 degrees Plato, Balling or Brix.
Specific gravity is the density of a liquid relative to that of water, i.e., if the density of the liquid is 1.05 times that of water, it has a specific gravity of 1.05. In UK brewing usage, it is customary to regard the reference value for water to be 1000, so the specific gravity of the same example beer would be quoted as 1050.
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).
Brews in Slovakia usually range between 3.8 and 5.0% alcohol content, and are traditionally classified by their density, or specific gravity using the Plato scale. This is the amount of dissolved solids before fermentation and tells roughly how much fermentable material (usually malted barley) was used and hints at what the alcohol content ...
3 Specific gravity? 3 comments. 4 Image. 3 comments. 5 Clarification. 1 comment. 6 WikiProject Food and drink Tagging. ... 8 FG, final gravity. 1 comment. 9 Plato. 1 ...
Ice beer was developed by brewing a strong, dark lager, then freezing the beer and removing some of the ice. This concentrates the aroma and taste of the beer, and also raises the alcoholic strength of the finished beer. [3] This produces a beer with 12 to 15 per cent alcohol. In North America, water would be added to lower the alcohol level. [4]