Wye Valley Brewery

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There are four essential ingredients required to make beer: water (referred to by brewers as liquor), malted barley, hops, and yeast.

A brew begins life with mashing in. This involves mixing together hot liquor and milled malted barley under controlled conditions in a vessel called the mash tun. The resulting mixture, called the mash, is allowed to stand for 90 minutes, during which time the starch present in the malt is converted into simple, fermentable sugars.


At WVB we use only the
best quality floor malted
barley
   

The liquid which runs off from the mash tun is called wort (rhymes with shirt) and is transferred to the copper where it is brought to the boil and hops are added. The primary function of hops is to impart a bitter flavour to the beer. The wort is boiled vigorously for 90 minutes and is then cast into the hop back where a second amount of hops are added to give aroma or hop character.


Head Brewer Jimmy Swan assesses the viability of
the yeast
   

The hopped wort is then transferred via a chiller to the fermenting vessels where yeast is added (called pitching the yeast). Yeast is a microscopic single-cell organism which converts sugars to alcohol and carbon dioxide gas.


Detailed record keeping is essential for good brewing practice
   

The fermentation takes approximately 3 days, during which time the yeast increases in mass by a factor of 5. The beer is then chilled and the excess yeast floating on top of the beer is selectively harvested for re-use.


Yeast being harvested
   

Now the beer is ready to be racked into casks where isinglass finings are added to allow any remaining yeast to settle out. At this stage, the yeast is still alive and still fermenting slowly – this is the secondary fermentation or cask conditioning phase.

Our beer has not been filtered or pasteurised, it is a natural product made from the finest ingredients, and we wholeheartedly believe that cask conditioned beer is the best drink in the world.


Jamie and Gordon racking