Brew Number 124

• American Cream Ale (Gluten Free)

Ingredients

• 3.5kg Pale Millet Malt
• 2kg Biscuit Rice Malt
• 200g Rice Malt Syrup
• 25g Fuggles hops (4.5% AA)
• 25g B Saaz / Motueka hops
• 30mL Beta-glucanase
• 30mL Alpha-amylase
• 10mL (more like 15mL..) Glucoamylase
• 4g Yeast nutrient
• 0.75g Whirfloc G
• 1 x Mangrove Jack's M54 California Lager yeast
• 1 x Lallemand Bry-97 US West Coast Yeast yeast
• Sachet of Mangrove Jacks Liquid Finings
• 3.7g Calcium Chloride (Mash)
• 3.7g Calcium Sulphate (Mash)
• 1.7g Magnesium Sulphate (Mash)
• 0.8g Calcium Chloride (Sparge)
• 0.8g Calcium Sulphate (Sparge)
• 0.3g Magnesium Sulphate (Mash)

Used Brewzilla for mashing.

Process

• Milled millet twice to ~0.70mm.
• Milled rice twice to ~0.95mm.
• Brought 23.25L of water to 85C.
• Add salts, malts & syrup.
• Stir on and off for 20 minutes.
• Cooled to 50C.
• Add all enzymes, stiring for 20 minutes.
• Set temperature to 80C for 120 minutes.
• Sparge with 5.0L water.
• Started boil with ??L wort
• Added 20g Fuggles
• After 45 minutes add 15g Saaz, 5g Fuggles, Whirfloc, yeast nutrient.
• After 5 minutes add 10g Saaz.
• Boil for 10 minutes.
• Turn off heaters.
• Chill wort (pump blocked earlier so had to use water to cool)
• Pump to fermenter filtered with muslin bag.
• Cooled to 20C and pitch yeast.

Used enzyme dosages from GF home brewing tutorial, seem high but there are plenty of enzymes..

Ended up with 19L in Fermzilla.

Brew house efficiency calculated at 89.4% (24.4 ppg) (seems very high..)

The yeast has an apparent attenuation of 81% If that is so the final gravity should be...

FG = (SG - 1000) * (1 - AA/100) + 1000 
   = ((1064 - 1000) * (1 - 81/100)) + 1000
   = 1012

Date	Measured SG	Temperature	Corrected SG	Brix	Notes
28/03/2021 16:40	1066	33.9	1069	17.5%	Seems rather high..
28/03/2021 23:00	1062	19.9	1062		iSpindel
03/04/2021 12:00					Cold crashed
05/04/2021 14:00					Added liquid finnings

Notes

• Yeast pitched at 20C.
• Temperature set at 20C.
• Used iSpindel3.
• Spunding valve set to 20 PSI (ale should have 2.3-2.6 volumes of CO2, used 2.0 to try and stop the iSpindel leaking).
• ABV = 1.646 * RI - 2.703 * (145 - 145 / SG) - 1.794 =
• Grafana plot

Appendix

• BrixConversion
• Refractometer calculator
• BrewCalculator
• Carbonation Calculator
• HydroCorrection
• ABV measurements

-- Main.darius - 28 Mar 2021