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The fermented beer will have some residual sugar which will raise the SG, the alcohol content will lower the SG. The difference between the SG of the wort before fermentation and the SG of the beer after fermentation gives an indication of how much sugar was converted to alcohol and CO 2 by the yeast.
Hops are the key ingredient that turn beer into beer. If you want to be an expert, here's what you need to know.
Because pollinated seeds are undesirable for brewing beer, only female plants are grown in hop fields, thus preventing pollination. Female plants are propagated vegetatively, and male plants are culled if plants are grown from seeds. [30] Hop plants are planted in rows about 2 to 2.5 metres (7 to 8 ft) apart.
Brewers generally refer to this apparent attenuation when using the word without qualification, [5] although the measurement of real attenuation — the actual percentage of sugar consumed by the yeast — is an important indicator of yeast health and for producing certain styles of beer. A beer which does not attenuate to the expected level in ...
It is important, where any conversion to °P is involved, that the proper pair of temperatures be used for the conversion table or formula being employed. The current ASBC table is (20 °C/20 °C) meaning that the density is measured at 20 °C (68 °F) and referenced to the density of water at 20 °C (68 °F) (i.e. 0.998203 g/cm 3 or 0.0360624 ...
Lambic in the early 19th century was a highly hopped beer, using 8–9 g/L of the locally grown 'Aalst' or 'Poperinge' varieties. [9] Modern lambic brewers, however, try to avoid making the beer extremely hop-forward and use aged, dry hops, which have lost much of their bitterness, aroma, and flavour. [10]
Many beer styles are classified as one of two main types, ales and lagers, though certain styles may not be easily sorted into either category.Beers classified as ales are typically made with yeasts that ferment at warmer temperatures, usually between 15.5 and 24 °C (60 and 75 °F), and form a layer of foam on the surface of the fermenting beer, thus they are called top-fermenting yeasts.
The beer foam stability depends amongst other on the presence of transition metal ions (Fe 2+, Co 2+, Ni 2+, Cu 2+...), macromolecules such as polysaccharides, proteins, and isohumulone compounds from hops in the beer. Foam stability is an important concern for the first perception of the beer by the consumer and is therefore the object of the ...