Gladfield Roggenbier
Batch Size
30L Kettle Full; ~23L (in fermenter)
Ingredients
Malts
- 3.0kg Gladfield Rye Malt (41%)
- 1.0kg Gladfield Munich Malt (25%)
- 1.0kg Gladfield Pilsner Malt (25%)
- 0.3kg Gladfield Medium Crystal Malt (7%)
- 0.2kg Gladfield Roasted Wheat Malt (2%)
- 0.4kg Oat Hulls/ Rice Hulls
Hops
- 60min – 25g Herzbrucker 3.7% (9.3 IBU)
- 30min - 25g Spalt Select 5.0% (7.1 IBU)
Yeast
Lallemand Munich Classic Hefeweizen yeast (1 packet)
Mash Additions:
5.00g Calcium Chloride
3-4mL 80% Lactic Acid (for pH Adjustment - requires pH Meter)
Brewing Process
- Heat Strike Water to achieve a Mash Temp of 66°C (~6°C above strike).
- Add minerals to Strike or Foundation water.
- Begin mashing in. Measure the mash pH (once all the grain is added) to achieve 5.2-5.5 (adjust with 1 mL additions of 88% lactic acid, if required).
- Mash at 66°C for 60 mins. Confirm no residual starches remain.
- Batch sparge with 78°C water until kettle volume is achieved (or stop runoff when the last runnings drop below 1.010 and pH rises above 5.75).
- Boil for 90 minutes adding hops and kettle finings at indicated times.
- At End Of Boil, whirlpool while chilling (immersion style) or for 10 mins, stand 15 mins or until chilled to pitching temperature.
- Transfer to fermenter at 18°C, oxygenating wort (inline or via aeration in fermenter).
- Rehydrate and pitch yeast as per manufacturer's recommendations. Ferment at 18°C for the first 72 hours. Then raise 1 degree per day up to a final temperature of 20°C
- When within 1-2 points of predicted FG, cap the fermentation (spunding valves are great for this) and wait until gravity is stable for 48 hours before deciding to place on cooling
Fining/ Filtering?...
- 48-72hrs after FG is reached (i.e. Taste No Diacetyl), crash to 0-1°C. Do not filter, or cold-condition or the yeast will drop out of suspension (beer should be cloudy).
- Keg or bottle condition - your choice? Aim for 2.6-2.7 volumes of CO2.