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Glossary
Noble Hops
The term "noble hops" traditionally refers to varieties of hops which are low in bitterness and high in aroma. They are the European cultivars or races Hallertau, Tettnanger, Spalt, and Saaz.[33] They are not bred as "modern" hop varieties but they are wild hops found and named for a specific region or city in which they were first found or by the farmer which found them or first propagated them. They contain high amounts of the hop oil humulene and low amounts of alpha acids cohumulone and adhumulone, as well as lower amounts of the harsher-tasting beta acids lupulone, colupulone, and adlupulone.[citation needed]
Their low relative bitterness but strong aroma are often distinguishing characteristics of European-style lager beer, such as Pilsener, Dunkel, and Oktoberfest/Märzen. In beer, they are considered aroma hops (as opposed to bittering hops); see Pilsner Urquell as a classic example of the Bohemian Pilsener style, which showcases noble hops.
As with grapes, the location where hops are grown affects the hops' characteristics. Much as Dortmunder beer may within the EU be labelled "Dortmunder" only if it has been brewed in Dortmund, noble hops may officially be considered "noble" only if they were grown in the areas for which the hop varieties (races) were named.
English noble varieties are Fuggle, East Kent Goldings and Goldings. They are characterized through analysis as having an alpha:beta ratio of 1:1, low alpha-acid levels (2–5%) with a low cohumulone content, low myrcene in the hop oil, high humulene in the oil, a ratio of humulene:caryophyllene above three, and poor storability resulting in them being more prone to oxidation. In reality, this means they have a relatively consistent bittering potential as they age, due to beta-acid oxidation, and a flavour that improves as they age during periods of poor storage.[34]
Hallertau or Hallertauer–The original German lager hop; named after Hallertau or Holledau region in central Bavaria. Due to susceptibility to crop disease, it was largely replaced by Hersbrucker in the 1970s and 1980s. (Alpha acid 3.5–5.5% / beta acid 3–4%)
Žatec–Noble hop used extensively in Bohemia to flavor pale Czech lagers such as Pilsner Urquell. Soft aroma and bitterness. (Alpha acid 3–4.5% /Beta acid 3–4.5%)
Spalt–Traditional German noble hop from the Spalter region south of Nuremberg. With a delicate, spicy aroma. (Alpha acid 4–5% / beta acid 4–5%)
Tettnang–Comes from Tettnang, a small town in southern Baden-Württemberg in Germany. The region produces significant quantities of hops, and ships them to breweries throughout the world. Noble German dual-use hop used in European pale lagers, sometimes with Hallertau. Soft bitterness. (Alpha acid 3.5–5.5% / beta acid 3.5–5.5%)
Alphasäure
Wegen ihres hohen Bitterwertes wichtigster Inhaltsstoff des Hopfens.
All Grain Brewing
A method of brewing where pre-made malt extract powders or syrups are not used. All of the fermentable sugars are obtained by mashing malt, and (possibly) other grain adjuncts. All-grain brewing requires more equipment, and is more time-consuming than extract brewing, but gives you a great deal more control over the final product. As a rough analogy, think of the difference between baking a cake from a boxed cake mix, versus baking a cake from scratch.
Strike water
The water which is used to mix with the grist at mash in.
Acid malt
A malt high in the phytase enzyme, which breaks down phytin into phytic acid, thus lowering the mash pH. Typically only used in Germany, where the Reinheitsgebot prevents brewers from using food-grade acids to do the same thing.
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