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STAGE FIVE:
CLARIFY THE BEVERAGE
FIRST CLARIFICATION
First clarification can take place 12 hours after cooling has
started, so in general, Day 4 ½ for ales and Day 6 ½ for lagers.
Our cider kit uses S-04 as the yeast and does not require
clarification. It should be ready to be consumed once cold on
Day 9 at about 1.008 S.G. So for our cider kit, just go straight
to Stage 6: Dispense the Beverage once it is cold. Our beer kits
however will need a full clarification as described below.
The pressure in the vessel may have dropped slightly due to the
effect that cooling the beverage has on the dissolved carbon
dioxide. Colder temperatures allow more carbon dioxide to
dissolve in a beverage and the pressure reduces a little because
of that.
So for first-time users who fermented at 1.5 bar, you may see
the pressure on the vessel pressure gauge reading between 1.25
and 1.5 bar.
1. Screw the VPRV right down (clockwise) to its fully closed
position. It has done its job and naturally carbonated the
beverage for you. It will now act as a safety relief valve if
someone inadvertently adds too much pressure from the
gas cylinder. When fully wound down it will release at 2.2
– 2.5 bar depending on the spring tension and ambient
temperature. However we will use the button on top of the
VPRV in the next steps to release gas manually.
2. Open the tower door and check that there is gas pressure
from the gas cylinder on the high pressure gauge. If not,
attach a full gas cylinder, as described in ‘Setting up your
Personal Brewery’ in Part One. Check the gas cylinder low
pressure is set at the final dispense pressure you want.
First time users should set this at 1.25 bar as discussed in
Appendices 5 and 7.
3. Close the vessel valve. Unscrew the sediment bottle
(see Figure 42). It screws off clockwise looking down
on the bottle. It is under pressure so there will be a
small release of pressure as it is unscrewed but it is
full of liquid, so it will be minimal. However it is advisable
to unscrew the bottle with one of your hands wrapped
around the top part of the bottle, to block any small
spraying of beverage.
4. When you have unscrewed the bottle, place it in the stain-
less steel bowl under the tank (see Figure 43). Then take
the 500ml spray bottle and spray up into the vessel valve
to remove beverage residue from the under-side of the valve
and valve thread (see Figure 44). Let the water drip onto
the bowl. Then using the removable stainless steel bowl
Please read Appendix 8 for background information and principles regarding clarifying
the beverage.
Fig. 46 Fig. 45
Fig. 43 Fig. 42
Fig. 44