Two of our
four Fermenting Vessels
Looking in the top of a Fermenter:
big, frothy, healthy yeast!
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Once the hops have been boiled in the Copper, the sweet wort has become
- you guessed it! - bitter wort. Bitter wort is effectively raw,
unfermented beer.
This raw beer now needs to be transferred from the Copper into the Fermentation
Vessel, where it will spend the next few days gradually metamorphising
into finished beer.
During this transfer, we pump the bitter wort through a plate heat exchanger,
pumping cold liquor through the other side of the plates. This has
the primary effect of chilling the beer down from the near-boiling point
at which it leaves the Copper to a more sensible fermenting temperature
of around 21°C. It also has the useful secondary effect of heating
up the cold liquor (hence the phrase 'heat exchange') which means that
we reclaim some of the energy we've pumped into the Copper, in starting
to heat up the liquor for the following day's brew.
At Atlas Brewery, we have four 20-barrel Fermenting Vessels, which allows
us to ferment up to 28,000 pints of beer each week.
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