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23-06-2021, 07:05
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Another example of Heineken’s weird period, when they to the old strength, but then watered it down, seemingly before fermentation. Enough to drop Donker Lagerbier under 3% ABV. I suppose it was just about intoxicating. Much like the weaker Mild Ales in the UK. I've adapted the recipe to take the watering into account.

Other than a touch of caramel, this is an all-malt beer, rice having been dropped from the recipe. I assume because of supply problems. Malt seems to have been reasonably available in the early war years. After the disaster in WW I, when imports of barley weren’t available, the Dutch started growing loads more during the interwar period.

The hops are a bit of a riddle again. One is, I think, described as “Sa” in the brewing record. Which I’m guessing is short for Saaz. The other is “Backa” which is what Vojvodina (in the North of Serbia) was called in German. Evidently, they have their own hop variety there. To be honest, there are so few hops you probably couldn’t tell what type they were anyway. Both were from the 1939 crop, if you’re interested in that sort of thing.


1940 Heineken Donker Lagerbier


pilsner malt
5.75 lb
89.15%


caramel malt 60 L
0.25 lb
3.88%


caraamber
0.33 lb
5.12%


carafa III
0.05 lb
0.78%


caramel 1000 SRM
0.07 lb
1.09%


Hallertau 90 mins
0.25 oz



Hallertau 60 mins
0.33 oz



Saaz 30 mins
0.50 oz



OG
1029



FG
1007



ABV
2.91



Apparent attenuation
75.86%



IBU
14



SRM
11



Mash double decoction




Boil time
90 minutes



pitching temp
48º F



Yeast
WLP830 German Lager








Mash in at 35º C (95º F)
5 minutes


Warm whole mash to 52º C (126º F)
20 minutes


Rest whole mash at 52º C (126º F) (protein rest)
15 minutes


Draw off first mash and without a rest bring to the boil
30 minutes


Boil first mash
10 minutes


The rest of the mash remains at 52º C (126º F)
40 minutes


Mash at 70º C (158º F)
25 minutes


Rest whole mash at 70º C (158º F) (saccharification rest)
30 minutes


Draw off second mash and without a rest bring to the boil
15 minutes


Boil second mash
10 minutes


Mash at 76º C (169º F) and mash out
20 minutes








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