BIELMEIER BHG 400 Bedienungsanleitung Seite 14

GB
During the hold time, stir the mash constantly and
monitor the temperature (α-amylase) .
At the end of this hold time, test the starch con-
version (put a small sample of the mash on a
white plate and add a few drops of iodine solu-
tion):

If the iodine turns yellow, the starch has been
fully converted to sugar;

Iif it turns a blue-purple colour, the conversion
is not yet complete . If this is the case, hold the
mash at 72°C for several minutes more and
repeat the test with iodine .
hEAT To 80°C:
Temperature setting: 80°C
Timer setting: 5 min
°C
(fig. 15)
Constant stirring is necessary to prevent the malt
from settling and causing an uneven tempera-
ture distribution in the liquid . Use the spoon to
prevent the malt from burning on to the bottom
of the vessel!
As soon as the temperature reaches 80°C (moni-
tor with digital thermometer (23)), set the timer
(7) to 5 minutes (hold time) . Stir constantly during
the hold time and monitor the duration with a
watch .
At the end of this hold time, the mash is transferred
into the straining pot (BhG 40002) using the ladle
(see Lautering p. 26) .
Thorough cleaning of the mash tun is important!
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CAuTIon!
Always use the ladle (14) to transfer the
mash . Danger – Never lift the full mash tun
(BhG 40001)!
LAuTERInG
The lautering process requires up to 12 l of hot
water .
First prepare the strainer pot (BhG 40002), which
you will now use as a lautering tun . Set the strainer
pot (BhG 40002) up next to the boiler pot (BhG
40001) (fig. 17):
 Insert the strainer (17) into the strainer pot
(BhG 40002) . Make sure the drain tap (8) is
closed . Then add hot water (70–80°C) until the
water is level with the bottom of the strainer
(17) (approx . 5 l) (fig. 16) .
(fig. 16)
 Now use the ladle (14) to scoop out the mash
and transfer it to the strainer pot (BhG 40002)
(fig. 17) . Do not open the drain tap (8) (it will
become blocked), and never lift or tip the boiler
pot (BhG 40001) (danger of scalding) (fig. 2)!!!
 When all the liquid has been transferred, put
the lid on the strainer pot (BhG 40002) and
allow the mash to stand for 10-15 minutes . Ide-
ally, you should set up the strainer pot (BhG
40002) so that you can transfer the wort via
the drain tap into the boiler pot (BhG 40001),
e . g . on a work table . Place the boiler pot (BhG
40001) again approx . 40 cm above the floor
(fig. 16) .
 Have plenty of hot water (70–80°C) ready for
the second wort .
°C
(fig. 17)
°C
40 cm
(fig. 18)
The lautering can now begin:
 Clean the boiler pot (BhG 40001) thoroughly
and place it below the drain tap of the strainer
pot (BhG 40002) .

Open the tap slowly and collect the first 1–2 l
of cloudy liquid (trub) in the jug .

As soon as the liquid runs clear, let it flow into
the well-cleaned boiler pot (BhG 40001) wit-
hout closing the drain tap .
GB
 Pour the trub gently back into the strainer pot
(BhG 40002) .
 After 5-7 l, test the specific gravity of the first
wort (fill the measuring cylinder (22) with
wort, cool it to 20°C and use the hydrometer
(21) to measure the specific gravity) . To do so,
hold the hydrometer at its thin end and im-
merse it gently, so that it does not touch the
bottom of the measuring cylinder . Read the
gravity where the surface of the liquid crosses
the scale (fig. 19) .
If the flow of liquid stops while there is still
some liquid above the grain bed, close the
drain tap (8), stir up the grain with the large
spoon (15) and allow it to settle again for ap-
prox . 5 minutes . Then repeat the procedure
from the beginning (without the specific gra-
vity measurement) .
(fig. 19)

When the grain bed is exposed, you can wash
it (called sparging) with approx . 25–30% of the
original amount of brewing water, depending
on the specific gravity you are aiming for . This
allows you to extract more sugar from the
mash . Make sure to add the water evenly and
gently over the grain bed . Use the ladle (14)
for this task .
The sparging water must be at a temperature
of 70–80°C, otherwise the wort can become
too viscous!
Once the wort has been collected, close the drain
tap of the strainer pot . Scoop out the used grain
with the ladle (14) . Clean the strainer pot tho-
roughly . Remember to rinse the drain tap well!
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