Notes: - Brewed on 9/21/19
- Took mash water and sparge water volumes from the Grainfather brew session tool
- Added a couple handfuls of rice hulls to the mash, could have used more, handfuls were more like half handfuls so need to up next time
- Expecting mash efficiency of 86% which implies a pre boil gravity of 1.047 (used brewer's friend vs. grainfather calculator to account for higher expected extraction from sugar addition)
- Mash temp settled right it at ~149F
- Hit 12.7 plato pre boil gravity which converts to 1.051 vs. 1.047 target so ~93% mash efficiency vs. 86% expected. Had 6.6 vs. 6.75 pre-boil and also had higher efficiency so hit 1.051 vs. 1.047. Grain absorption with Rye and Rice Hulls seemed to be a bit higher than expected.
- Expecting to boil down to ~6 (5.9) gallons so boil-off tool estimates 1.057 OG. Actual original gravity reading was 13.7 plato which converts to 1.056 vs 1.057 expected. Originally expected 1.052 but higher efficiency and boiling down smaller volume (6.6 vs. 6.75) so higher OG expectations.
- After boil had ~5.9 gallons (expected ~5.9) in the kettle and ~5.5 gallons made it into the fermenter
- Pitched the yeast starter and set fermentation chamber at 70F, bumped to 72F on day 2, then bumped to 74-75F and held here on day 5
- Packaged on 10/2/19, batch #37, FG was 1.005 (at 74F) which converts to 1.007 so 85% attenuation vs 80% avg. and 88% expected |
