Brew Number 110

• Brew Craft's "Dublin" Stout (20908)
• Safale S-04 yeast

Kit contained

• 1.7kg Magrove Jack's Irish Stout LME
• 1.7kg Brewcraft Dark Malt
• 1 x 50g Black malted grain
• 15g Fuggles Hops
• 100g lactose
• 11.5g Safale S-04 yeast

Brought out to 15L in Fermzilla.

The yeast has an apparent attenuation of 75% If that is so the final gravity should be...

FG = (SG - 1000) * (1 - AA/100) + 1000 
   = ((1055 - 1000) * (1 - 75/100)) + 1000
   = 1013.75

Date	Measured SG	Temperature	Corrected SG	Brix	Notes
02/05/2020 17:00	1055	22.8	1055	14.8%	Spunding valve set to 20 PSI
15/05/2020 17:00	1022	16.0	1021	10.4%	Cold crashed to 2C, hopefully reading high due to lactose

Notes

• Yeast pitched at 23C.
• Temperature set at 20C.
• Used iSpindel3.
• Spunding valve set to 20 PSI (stout should have 1.2 - 2.0 volumes of CO2, used 2.0).
• ABV = 1.646 * RI - 2.703 * (145 - 145 / SG) - 1.794 = 7.3%
• Grafana plot

Appendix

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

-- Main.darius - 02 May 2020