Speidels Braumeister
Page 18 of 32
wort from boiling over, but more importantly, it is also necessary for the hops boiling
process to ensure that all unwanted aromatic substances can evaporate from the hops,
as they would otherwise impact negatively on the taste of the beer.
Adding hops originally also served to better preserve the
beer. Depending on the type of hops and bitter substance
content, add the first batch of hops to the boiling wort 10
to 15 minutes after boiling has started. The hops remains
in the wort during the entire boiling period, as its
substances only begin to unfold their effect after boiling
for some time, thereby imparting the intended hops
bitterness to the beer. The resins and oils in the hops are
also released, which then ultimately gives the wort its
malt flavour. You can then add another batch of hops approx. 10 min before the end of
the boiling period, which merely adds to the flavour. Additional excretion of bitter
substances is no longer possible in the remaining time. The hops amount varies
according to recipe and beer type. The amount also depends on the hops itself, as the
hops may vary according to cultivation location and year. Hops can be added in the
form of pellets or dried hop blooms
(only in a hop bag).
The bitter substance content
in beers is indicated in bitter units (BU) and is around 10-20 BU in wheat beers and
25-45 BU in Pilsners. The bitter substance content of hops is indicated in % alpha
acid, which can be between 2-4% (approx. 8% in pellets). The following formula can
be used to calculate the hops quantity:
g
fausnutzun
Bitterstof
x
Alphasäure
x
xLiterBier
BE
eiten
Bittereinh
einGramm
Hopfenmeng
%
%
10
)
(
A bitter substance concentration of 30% can be assumed for a total boiling period of
80-90 minutes
Example:
A volume of 200 L of wheat beer with a bitter substance content of 15 BU is to be
brewed. The hops available has an alpha acid content of 3%. Thus, the following hops
quantity is derived, which is added at the beginning of the boiling process. The hops
added shortly before the end of the boiling process is not included in this calculation,
as no more noteworthy bitter substance amounts are imparted to the wort in this short
period of time.
g
x
Literx
BEx
n
GrammHopfe
330
%
30
%
3
10
200
15
Once the boiling time has elapsed, another signal tone is
emitted, indicating the end of the brewing procedure.
Use the
Select
button to acknowledge it. The heating
switches off.
Note: Only use hop flowers togher in hop bags.
Add hops!
1. of 3 hop additions
Automatic2 > Boiling
11:45
P H
Abort
Select
Brewing completed!
Automatic2 > Boiling
11:45 P H
Abort
Select
