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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.
Beer style is a term used to differentiate and categorize beers by various factors, including appearance, flavour, ingredients, production method, history, or origin. The term beer style and the structuring of world beers into defined categories is largely based on work done by writer Michael James Jackson in his 1977 book The World Guide To ...
However, the beer was brewed to full European strength and to the practices of a pale lager style. Later, rice gained popularity in the domestic brewing market during World War II, due to grain rationing on the home-front. Most breweries were unable to afford the necessary amounts of barley required for production and so began using rice as a ...
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).
Burtonisation is the act of adding sulphate, often in the form of gypsum, to the water used for the brewing of beer, to bring out the flavour of the hops. The name comes from the town of Burton upon Trent which had several very successful breweries due to the chemical composition of the local water. [14]
Yeast metabolize the carbohydrate source to form a number of compounds including ethanol. The process of brewing beer starts with malting and mashing, which breaks down the long carbohydrates in the barley grain into more simple sugars. This is important because yeast can only metabolize very short chains of sugars. [3]
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The average number of people who drink as of 2016 was 39% for males and 25% for females (2.4 billion people in total). [4] Females on average drink 0.7 drinks per day while males drink 1.7 drinks per day. [4] The rates of drinking varies significantly in different areas of the world. [4]