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Brewing

The Brewing Process

 
Brewing is one of the oldest industries in the country, and as one would expect of such a traditional industry, the principles of creating beer has changed very little as the centuries have passed. Today brewing has crystallized into a number of distinct steps:  
   
The Grist
For each individually brewed ale different types and varieties of malted barley are used, in different proportions, to make up the recipe. Roasted barley, chocolate and black malts are used in the darker beers, while amber, crystal and malted wheat is used in the lighter ones. Examples are shown on the barrel below.
 
IngredientsThe lion’s share of any grist is the malted barley, from where most of the sugars come from.  
   
Grist to the Mill
Once the malts have been carefully weighed and counted they are then loaded into the mill, where they are cracked. They are then stored in the grist case awaiting the next day's brewing. The expression "it's all grist to the mill" derives from this operation.
 
Kettle The Run off
The sugar is extracted by adding water to the “Mash Tun” and boiled for one or two hours to a temperature of around 15ºF. The crushed malted barley is then added and the liquid is then strained through the bottom of the tun and is sprayed with hot liquor (Sparged) to extract the goodness.
The hot sweet liquid (Wort) then runs off, by gravity, into the
under-back, where it is then pumped into the copper (Kettle).
 

The Copper (Kettle)
Once the correct volume of wort is received in the copper the bittering hops are added, the wort is then gently brought to the boil and allowed to simmer for up to an hour and half. Before the end of the boil the aroma hops are added. There are many varieties of bittering and aroma hops and each brew, just as it will have its own malt recipe, will have a special hop recipe.

 

Casting
Once the wort has been allowed to settle it is then cooled, and after cooling pumped into a fermentation vessel. The yeast is then added to the wort, and after a few hours God's gift, as it was known before the advent of microscopes, starts to do it’s magical work.

Brewing equipment  

meshtun

Fermentation

Depending on what’s brewing the fermentation lasts for about two to three days, yeast is then skimmed for the next brew and when the correct strength is reached the beer is then cooled for a further four days before being racked in casks.  The ale is then cooled to 43oF.

 
Yeast is a living organism which converts sugar into alcohol. It forms on top of the brew, being skimmed off before racking          
A small amount of sugar is left un-fermented at this stage to allow the beer to secondary ferment in the
cask. Hence the name "cask conditioned beer".
 
Racking & Storage
Beer is then racked, (which means being transferred to the casks in which it is sold to pubs), at which point isinglass finings are added to clarify the beer.
The casks of beer are then stored for seven to ten days in the refrigerated beer store before being distributed to the trade. This allows the beer to condition and mature.
 
barrels  
Examining samples under microscope

Monitoring Quality

  • Each brew is continuously monitored throughout its maturation.
  • Samples are examined in the laboratory at regular intervals.
  • The raw materials require careful inspection.
  • Cleanliness is next to Godliness in a brewery!
 

cleanliness in the brewery