It removes undesirable elements and breaks down sulphur compounds.
What is yeast and what does it do (basic)
Yeast is a micro-organism which feeds on the sugar in the wort
When were the wooden wash backs and mash ton replaced?
In 2016
What are other benefits of using oak
It aids in oxidation which removes harshness, increases fruitiness and adds complexity
What happens in the mash ton
12 tonnes of grist and 50,000 litres of warm water. “Second water” then gets sparked in throughout the mashing process, first at 72 C going up to 84.
How does the wort drain out the mash ton and where does it enter before passing through the heat exchange
The wort drains through plates on the bottom of the mash ton into the under back. The under back is a balancing vessel between the mash ton and heat exchanger
What is peat?
Fossilised vegetation - early stages of coal
How long do you steep the barley for?
A couple of days
Why do we use oak
Intricate chemistry. Oak contains substances like hemicellulose which caramelises and adds sweetness and colour. Also lignin and tannins increasing complexity
What do the hot spares of water do
Allows the the starch to convert to sugars such as maltose, glucose and sucrose
What happens after the barley is dried and before it enters the mill?
It gets shaken to remove any growth which we don’t want in our whiskey. They are mixed with water and made into pellets for farms and pet food.
Why do we char casks
Almost caramelizes them and releases flavours like vanilla which removes any off notes
How does the yeast work (detailed)
When the yeast is under anaerobic conditions (absence of air), such as inside the wasback, it finds the energy by consuming the sugars creating alcohol and CO2
How does the heat exchanger work
Cold water passes one way to a heating tank, the wort passes the other way to the wash back. This also heats up the cold water ready to give sent into next batc
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