Club Brew 2020 – British Porter – All Grain

Recipe Specifications

Brewhouse Efficiency72%
Batch Volume19 L
Boil Time60 min
Mash Water18.75 L
Sparge Water8.28 L
Total Water27.03 L
Boil Volume23.83 L
Pre-Boil Gravity1.041
Original Gravity1.047
Final Gravity1.012
Strike Temp71 °C
Temperature67 °C — 45 min
Mash Out76 °C — 10 min


3.2 kg80%Maris Otter Pale Malt, Maris Otter
350 g8.8%Brown Malt
350 g8.8%Special B
100 g2.5%Chocolate Malt


56 g30 IBUEast Kent Goldings (EKG)Boil – 30 min

Safale S-04 – 1 pkg

Water Profile
Ca2+ 56
Mg2+ 10
Na+ 31
Cl- 60
SO42- 88
HCO3- 89

Extract Version

For the extract version, the base malt (Maris Otter) was replaced with 2 Kg Amber Dry Malt Extract (DME). The other grains are the same.

Extract Directions

To brew the extract version of this recipe you will need to use the BIAB (Brew in a Bag) method. A summary of the steps are listed below. The steps below will outline the process but will not go into detail about all the optional steps. If you have any questions feel free to ask anyone in the club, or email the president.

  • In a large pot (minimum 5 gallon pot is recommended) heat 3 – 4 gallons of water to 71 C (160 F) and turn off the heat.
  • Pour your grains into a grain bag (muslin bag, or a nylon brew bag) and steep in the water. The temperature will fall. If you don’t have a grain bag, they can be picked up cheap from your favourite home brew shop.
  • You’re looking to have the temperature hit approximately 68 C (155 F). Put the lid on the pot and let it steep for about 30 minutes. Ideally, you don’t want to let it get below 62 C (145 F) and not more than 73 C (165 F). *Note: For extract kits, the grains are for flavour mostly so maintaining an exact temperature here is not critical. Just stay in the range and you’ll be fine.
  • After the 30 minutes lift the grain bag up and let the liquid drain out back into the pot and dispose of the grains. Caution, it will be HOT! I use an oven mitt.
  • Bring the liquid just to a boil then move the pot off the heat. Now add the DME (Dry Malt extract) while stirring constantly. Make sure it’s all dissolved. If it isn’t you may scorch the extract.
  • Move the pot back onto the heat and bring the liquid to a boil. Once boiling has started start a timer. At the 30 minute mark add your 30 min hop addition (East Kent Goldings). This is your only hop addition.
  • Cool down the wort as quickly as possible. You can use an immersion chiller (or any other type you have) or you can make an ice water bath in your sink for the pot.
  • Once the wort is cooled to less than 25 C (85 F) you can transfer into the fermenter. (Cleaned and sanitized of course).
  • Add cold water to top up to 19 L (5 gal). This should reduce the temperature further.
  • Once the wort is 18 – 20 C (65 – 68 F) add your yeast.