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Some experience · 20 litres · all grain

Belgian Dubbel

Deep amber, with raisin and dark caramel that come from candi syrup and yeast rather than from roast. Rich to smell and unexpectedly dry to drink.

Original gravity

1.062

at 72% efficiency

Final gravity

1.014

78% apparent attenuation

Alcohol

6.4%

by volume

Bitterness

17 IBU

Tinseth

Colour

16.8 SRM

33 EBC, Morey

Grain bill

5.67 kg

0.28 kg per litre

Brewed to Belgian Dubbel, and all five computed figures land inside the published ranges for it.

OG inFG inABV inIBU inSRM in

What decides this beer

Dark candi syrup rather than crystal malt. Crystal gets you a similar colour and leaves the beer heavy; the syrup ferments out, which is how a 7% beer stays drinkable.

Fermentables

MaltWeightColourExtractOf grist
Pilsner malt5.00 kg1.8 L37 ppg88%
Aromatic malt0.30 kg20 L35 ppg5%
Special B

The raisin. This single malt is most of what makes a dubbel taste like a dubbel, and 120 g in 20 litres is already plenty.

0.12 kg180 L31 ppg2%
Dark candi syrup

Added at 15 minutes. Ferments out, so it deepens the colour and flavour without leaving it sticky.

0.25 kg180 L32 ppg4%

Colour and extract are read from the malt reference, not typed into this recipe, so they are the same figures every other page on the site uses.

Crushing your ownGrain mill$92.90

Hop schedule

HopWeightAlphaTimeContributes
Styrian Golding30 g5%60 min15.5 IBU
Saaz15 g3.5%10 min2.0 IBU

Alpha acid varies by crop year and lot, which is why it lives on the recipe rather than on the variety. Brew to the figure printed on your packet and the bitterness will move; the IBU calculator will tell you by how much.

Method

  1. 01Mash at 65C for 60 minutes.
  2. 02Boil 90 minutes, stirring the candi syrup in with 15 minutes left.
  3. 03Pitch at 19C and allow a free rise to 24C over the first three days.
  4. 04Condition three weeks, then package at 2.8 volumes.

Numbers for the day

Mash
65 C for 60 min
Strike water at 3 L/kg
71.2 C
Strike volume
17.0 L
Boil
90 min
Ferment
19-24 C
Carbonate to
2.8 volumes
Priming dextrose
151 g
Yeast
Belgian AbbeyWyeast 1214

Strike temperature assumes grain at 20C and priming assumes the beer peaked at 20C after fermentation. Recompute both for your own kitchen on the strike and priming calculators.

For the mashDigital thermometer$12.31For the fermentTemperature controller$36.00

Before you package

Take a gravity reading two days apart and only package when it has not moved. A beer bottled while still fermenting keeps fermenting in the bottle, and the sugar you prime with lands on top of whatever was left. At 2.8 volumes this one needs about 151 g of dextrose for the batch.

To know it has finishedHydrometer and trial jar$21.99