Brew Number 109

• Brew Craft's "Escaped Convict" IPA (29020)
• Safale S-04 yeast

Kit contained

• 1.5kg Briess Munich Malt
• 1.7kg Brewcraft Lager Malt
• 1 x 150g cracked Crystal grain
• 15g Goldings hops
• 15g Saaz hops (for dry hopping)
• 11.5g Safale S-04 yeast

Brought out to 19L 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 
   = ((1049 - 1000) * (1 - 75/100)) + 1000
   = 1012.3

Date	Measured SG	Temperature	Corrected SG	Brix	Notes
13/04/2020 17:00	1045	35.9	1049	12.0%	Spunding valve set to 22 PSI
17/04/2020 17:00					Added Saaz hops, reset valve - was showing 30PSI
28/04/2020 14:00	1012	19.8	8%		Cold crash, set to 2C
29/04/2020 13:00					Put CO2 on at 8 PSI (spunding valve showed 20+PSI)
30/04/2020 23:00					Transferred to keg

Notes

• Yeast pitched at 19C.
• Temperature set at 17C.
• Used iSpindel3.
• Spunding valve set to 22 PSI (IPA should have 2.1 - 2.6 volumes of CO2, used 2.3).
• ABV = 1.646 * RI - 2.703 * (145 - 145 / SG) - 1.794 = 6.7%
• Grafana plot

Appendix

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

-- Main.darius - 10 Feb 2020